Heaven?

Random thought:-

What's heaven like? I don't mean how it physically looks like, but the people that are there. Are they mostly made up of old people from relatively wealthy countries, child soldiers that die in battle, babies that were aborted, you know the stereotypical stuff on how people die in various countries / cultures.

Or, do people go to heaven and reappear as how they were in the prime of their life? Or when they were the happiest in their lives? Hmmm..