If there is no life after death then what are we living for? Nothing. It's as simple as that. I may not believe in the Christian version of "heaven" but I do believe in an after life. If we just live and die and that's it then what is the point of achieving your dreams and goals if they all amount to nothing? The answer is NOTHING. Makes no sense right? There has to be life after death. It's the only thing that makes sense... BEAT THAT SCIENTISTS!!
As for reincarnation, as a Wiccan I believe in this. Everything in nature goes in cycles, from the Earth and other planets rotating around the sun to the seasons to the months and days. Everything goes in a circle eventually. So why not humans? What makes us different (spiritually, not physically) from anything else in the universe that moves in a cyclical motion? Nothing.