Donating your organs after you die can be one of the last altruistic you perform as a human being. Since you won't be using it anyway, why not leave your penis to some person that really needs it and can get a lot of good use out of it. While we're at it, I'd like to donate my period to someone that can use that, too. I'll also throw in a lifetime supplies of menstrual supplies at no cost to the lucky recipient.