1 Yeah, if existance of God was proved, maybe people would behave in different way, understanding that there can be punishment afterwards. And even death would seem not that ugly and scary thing..
2 I think as long as spirit and mind are considered different substances you can never find such a scientific evidence that would convince all rational-minded non-beleivers and spiritual-minded beleivers.
3 The medieval monks and philosofer tried to do it during centuries with no luck. Perhaps the modern scientific research technologies can help...
Hehe, imagine it:
Null-hypothesis: The God does exist
Alternative hypothesis: The God does not exist
Methodology: empirical metaphysics :)
483 points 
1 Yeah, if existance of God was proved, maybe people would behave in different way, understanding that there can be punishment afterwards. And even death would seem not that ugly and scary thing..