I hope so. It would suck if we lived just once in an eternity of nothingness. I hope those religious folk are right about an after life. Actually wait.. there is some truth to it. A friend showed me a picture of a ghost. It was pretty creepy but it leaves hope that there is something else out there.
Yes, if by lived before you mean in the moments leading up to this current moment. However, if you mean before this life, then no.