a) Be castrated, with no possible chance of a replacement/reversal in the future? b) Keep your manhood, but instantly die if you use it with anyone who isn't immediate family? Masturbation is also forbidden.
If those were my only options I would kill myself because A is a fate worse than death and with B I would die anyway.
B, but then I'd probably die of something horrible because I don't have those wonderful endorphins flowing through my blood every night (as I masturbate over EDGE's Octopus-cock gif).