You mix actions and speech, which brings up an interesting paradigm. In a supposedly free society we should be able to do anything that does not infringe upon the freedoms and safety of others. The concept of crimes against one's self, should be an absurdity in a free country. This opens up arguments for legalizing drugs (the war against which has probably done more damage than the drugs themselves), prostitution, gambling, gay marriage and so on. Pretty simple concept I admit, but I think it's a valid argument nonetheless.