To the "how do you enforce a law making it illegal to kill yourself" folks, don't think enforcement and think of punishment if you commit a felony. Namely, if you commit a felony, the government can sieze your assets (in the US anyway), thus instead of a law, think of it as a tax. If you kill yourself, the government gets all your money instead of your heirs. I can't remember all the details as there are some stipulations, such as shared assets can't be siezed and such, but the whole point of making it a felony is so the government can get your money, and not to discourage you from doing it.