Believe it or not Paul, I really agree with you quite a bit. I would never freedive on drugs (unless it was something I did very regularly, and there is nothing like that for me) and would recommend very strongly against it for anyone, just to be on the safe side - although I have a friend who drinks and smokes (mj) like no other, on a daily basis, and he has often met me for a dive after a 6 pack or something similar. I keep a close eye on him, but he's really no different than usual, since he's used to being in that state of mind. Anyway, going off topic a little here, the point of this post wasn't to make provisions under which it "is" ok to mix the two dangers.
My point is that your argument about dead people inconveniencing others could easily be turned against you via freediving or something else you love. Traffic incidents inconvenience me like nothing else, and they don't seem to be letting up, but fortunately neither does driving as a whole. I skydive regularly, and this year has been a particularly bad one for fatal incidents, compared to the past several years. There are many people I know who think skydiving is insane, stupid - there are even some people who preposterously say it is addictive and once I feel that adrenaline rush I am an unstoppable junkie. While it is a damn satisfying feeling and I joke that I'm "addicted", the notion as they view it as absurd. Fortunately for skydiving, people have never become so inconvenienced enough by dead skydivers to regulate the sport unfairly - although there is quite a bit of regulation.
Even moreso than skydiving, the average person thinks freediving is stupid. How many times have you scared the crap out of a SCUBA diver? Try sitting down to lunch with several of your co-workers and explaining what you did under the surface of the water this weekend. Observe their responses. They fully expect you to die sometime soon, they think your actions are so foolish.
Me? I don't use drugs regularly, and as such I would never mix them with diving. For me, it's an unsafe thing to do (mixing the two). But it's not fair for me to call someone else's actions unsafe because those same actions would be unsafe for me. If that were true, my deep freedives would truly be unsafe, since from a co-worker's perspective they are. Every person has a different margin of safety, and you can't prove what someone else's is or isn't. The only person who can judge that is the person wearing the shoes. Unfortunately, many people are bad at that, so deaths happen - hell, even the good ones make mistakes. But freedom IS freedom, regardless of how stupid you or someone else considers it. I don't think the argument of "inconvenient corpses" is enough to override personal freedom. Maybe if I ever get really, really overrun in corpses I'll change my mind, but for now I vote for freedom, including the freedom to kill yourself (yes, even willingly, not that I would).