If you're not a Christian, why would you want to go to Christian heaven? It sounds rather a dull and boring place in the first place, kind of like being forced to go to Sunday School or Church for the rest of your death. I can think of better things to do in my death.
Precisely! If people don't care about God or goodness in this life, what takes place the instant after death to make one care about God and goodness in the next?
I care about God. I am God, so I care quite a lot, thank you very much.
I'm also a very moral person, I don't need others to tell me what morals I should follow, I have a brain and I use it.
I live my life in the way I deem to be the best way, I care about other people around me, and I put a lot of effort into trying to help others to achieve what it is they want to achieve.
I don't need to be criticized by others simply because I don't accept their make belief.