I didn't mean lance his friend I ment in general, someone who's like stranded in a place all alone where he can never leave ever again. then I don't think that suicide is a selfish thing well maybe selfish but not in the way that he'll hurt others
and sometimes ppl can commit suicide to serve a greater good like that guy in crimson tide, who has the combination to the missile launch key, if he was sure the capt. was gonna launch those nukes starting a nuclear holocaust, then I think suicide would be a good option, NOT a FOOLISH or SELFISH
those cases are rare I agree but we shouldn't generalise.