The first mistake most people make when thinking about evolution is thinking it is 'going' somewhere. It isn't, it is merely happening.
Cheetahs didn't think.... 'Hmmmm we need to be faster to catch the prey', the slow prey got eaten, the fast prey bred. After a surprisingly short while, the creature becomes synonymous with it's evolutionary niche 'As fast as a Cheetah, as strong as an Elephant' etc. Slow Cheetahs die, because they cannot catch the fast prey.
Think about it this way, there are 4 Billion people on Earth, every single one of them is evolutionarily different, different tastes, opinions and abilities.
In the wild, only those with the most effective genes would breed. It's hard to understand evolution because we have created a society in which that no longer applies, so because we don't see natural selection at work, we find it hard to take it into our lives.
Edit : Oh, and the Bible also describes 'Heaven' by dimensions, and I hope you don't mind sharing a room...