Couples in the context of Genesis 2

The man and his wife were both naked, but they were not ashamed.

Genesis 2:24 NET (emphasis mine)

And God Almighty and Perfect created man, the original human being. But His original creation had a tiny detail: he was neither man nor woman, he was Adam. God hadn't created woman, so how could He create a gender-differentiated being if there was no other one with whom he could couple.

He put the man in this beautiful garden, where Adam saw trees and their fruit, and those were pleasant to look and good for food. The man felt they were good, he naturally knew it, that's why they were pleasant; there was something in him that knew he could eat from them. And then God gave him the freedom to eat from any tree, but the one in the middle.

Then God saw something: the man was by himself, alone but not in the sense of loneliness, God was with him. The Hebrew word that's been translated as "companion" in many bible versions actually means "helper", "one who does what we cannot do by ourselves". If analysed in the context, we see that after that realization, God wanted to create a helper, a companion for man that would help him with the labor God entrusted: to care for the garden. 

But it wasn't going to be any creature that Adam could find the one who was going to be his companion, it had to be one suited for him, complementary to him, not in the context of sexuality --the man was not gender differentiated yet, so that companion wasn't a sexual one. That's why, in order to find a partner for Adam, God brought before him all kinds of animals. There's an interesting thing here: God brought all these creatures before Adam for him to choose. God could've made a perfect companion right away and give it to Adam, but instead He delegated that responsibility to man. 

The Scriptures say that after naming all creatures, a suitable companion was not found, so we can deduce that God and Adam expected to find one among the creatures. He didn't, so God made woman and brought her to him. When Adam saw her, he said "this one at last [...]". After all, God did made him an adequate companion because Adam was happy with it, he saw she was suitable, she was like him, related to him, thus he gave her a name.

It is because all that that the man leaves his parents' home and comes to live with his wife and make a family, because Adam was pleased with the companion that was made for him (the scholars of the NET bible translation agree that the word flesh at the end of verse 24 really means 'kin' or 'family', as explained by the ancient OT custom of calling relatives flesh of my flesh). God knew what he needed and he liked it because it was the woman the one who was made for the man, not the other way around (1 Corinthians 11:8-9). I think that also explains why Jesus said that eunuchs don't have to live with women (Matthew 19:10-12): if they don't find them suitable companions, they don't have to deal with them.

Some times I wonder, if the man had found dogs to be better help for him, women would've never existed, and it would be just Adam and his dogs the ones running the world! So, Genesis 2 is not a story of romantic love, how sex came to be, or other fleshy things, but one of partnership, about finding someone suitable to be our complement, someone like ourselves with whom have a lot of offspring that could help us run the planet. Let's remember this all came to happen so we could accomplish God's very first commandment to Adam: "take care of my garden."

The world is not coming to an apocalyptic end

For those who are somehow religious/spiritual and hold the Bible as truth, here's a rough explanation about why the world is not coming to an apocalypse like in Hollywood movies.

First, the book of Revelation never says that the Earth will be destroy by a cataclysmic event. Yes, there's a meteorite involved, but it never disintegrates a great mass of land -- or water -- and annihilates life through and explosion. It just falls and contaminates water; no gigantic Armageddon-style waves that inundates entire cities. The book is mainly metaphorical and when talks about destruction, it is about the end of this system of things -- or better put, the reign of the Dark Prince's age and the restoration of God's kingdom. Plus, when New Jerusalem comes down from Heaven, it will be placed on Earth; it'd be a shame to see such a beautiful city surrounded by a horrible Terminator-like landscape. And no, it won't happen in 2012 as the Mayan predicted.

Here are some passages you should read:

For this is what the LORD says—
he who created the heavens,
he is God;
he who fashioned and made the earth,
he founded it;
he did not create it to be empty,
but formed it to be inhabited—
he says:
“I am the LORD,
and there is no other [...]
Isaiah 45:18 NIV

He said to them: “It is not for you to know the times or dates the Father has set by his own authority.
Acts 1:7 NIV

In fact, He hates the ones who destroy the Earth:

“I am against you, you destroying mountain, you who destroy the whole earth,” declares the LORD. “I will stretch out my hand against you, roll you off the cliffs, and make you a burned-out mountain.
Jeremiah 51:25 NIV (similar to Revalation 11:18)

Still I think there's gotta be some kind of natural disaster as the next passage says -- I believe the author is being hyperbolic:

But the day of the Lord will come like a thief. The heavens will disappear with a roar; the elements will be destroyed by fire, and the earth and everything done in it will be laid bare.
2 Peter 3:10 NIV

Perfection

Nobody is perfect because we can't achieve perfection. But perfection can be reached. It can't be reached by our effort as we ourselves are imperfect and cannot yield perfection, thus we need something (or someone) which is perfect, and that is God. 

He is known to ask humans for things who are impossible or very difficult for us to achieve, but He only does that to teach us we can't alone. That's why He asked us perfection:

"Be perfect, therefore, as your heavenly Father is perfect."

NIV Matthew 5:48

So it means perfection is somehow achievable, we must just ask God for it through Christ:

"And I will do whatever you ask in my name, so that the Father may be glorified in the Son. You may ask me for anything in my name, and I will do it."

NIV John 14:13,14

"Now to him who is able to do immeasurably more than all we ask or imagine, according to his power that is at work within us..."

NIV Ephesians 3:20

God can do what is unimaginable for us and He does much more than He's asked if we have Him within us. So, are we imperfect? Yes, but perfection is reachable; there's no excuse not to try.