My favorite Soul Train groove: [video=youtube;t_Q-usJgCes]http://www.youtube.com/watch?v=t_Q-usJgCes[/video]
IP, committing suicide goes against every law of nature. A person that does it is not in their right mind. I'm glad I don't have to make that call.
I'll take a quick stab at this one. The sacramental theology of the Roman Catholic church has struggled with this question, as well as Protestant denominations which hold that an individual can lose his salvation. I personally follow in stream of most Protestant theologians that no sin is unforgivable (apart from the difficult blasphemy of the Holy Spirt, but that is a separate issue), even a transgression as final and ultimate as taking one's own life.