I hate it when people start a discourse with the words "as a Christian", because it often means they are going to come out with a stream of self-righteous poppycock.
But..... as a Christian, and in response to your two points, I would say that:
1. I am not sure what will happen to me after my death. The promise of eternal life is certainly not the only, or even the main reason, or perhaps any part of the reason why I am a believer. I am much more interested in the moral, ethical and human(e) side of it, about how you should live your life, about how to treat people etc etc.
2. I don't believe in pre-destination, or that God has got it all mapped out in advance. Like many (most?) others, I believe in free will.
And for what it is worth, going back to the original question, I am not a scientist but I totally accept the arguments for evolution.
PS -and I am not trying to pick a fight.
I to am not seeking a fight but would just comment with regard to your point one that you don't have to be religious to moral, ethical and humane. I don't believe in life after death in any form and certainly not that there is a supreme power making decisions but despite not having some wonderous goal to work for at the end, I live my life (or try to) with those three principles that you quote. Unfortunately, there aren't enough of us doing that.