Re: Suicide...
i am not sure but i think the belief of reincarnation is that if you screw up in first life then you come back more messed up. according to a hindu collegue of mine they have 7 (or was it 8?) rounds in this world. Say if you mess up in first life you'll come back as a lesser human being. Thus the caste system, brahmins kept it tidy thus they were born brahmins and if you screw up then you might come back as something else.
NOTE: it was told to me by as i said an acquaintaince , who happened to be brahmin , if it offends anyone because of inaccuracy then i apologize in advance.