Selfish??!!

Is suicide really selfish??? Why...it's my life!!!  Not everyone can be happy - not even most of the time.  Why should I be terminally miserable and therefore cause misery to everyone around me?  I can't be a good husband or father in that condition.  Therefore, I should be able to do what I feel needs to be done in my best interest; everyone that MAY initially get sad will get over it.  There's just too much for me to overcome: absolutely no self-love, no love for life, clinically/chronically depressed, etc...