I will never say it's good for you. And I'm not a libertarian. And it's fun to go round and round.
A gateway drug...yes, when used by humans who have no self control over their addictions. Sex with my wife is good, but I'm able to control my desire to have sex with other women because I have self control. and believe me, I want to have sex with other women. Each and every instance of marijuana being a gateway drug is from a human who can either consciously or, perhaps, genetically, not control themselves. There are just as many folks who use marijuana, and only marijuana, as there are those who have it become a gateway drug for themselves.
As for the last question...why would you put nicotine into your body? It's an alkaloid found in plants, and it's been scientifically proven to be one of the top addictive drugs in our country. But you still do it, for recreation. There's no difference, save for that nicotine is WAY more addictive than marijuana.
Yes, indeed, it's fun to go round and round.
I think that you are right about nicotine (and caffeine and alcohol) for that matter. That citation is, quite frankly, an argument in favor of all of them being gateway drugs (including MJ). Perhaps it starts with one of these then progresses on to other 'safe' drugs from there. Study after study has shown that the use of these drugs leads to the use of other drugs and substances. It really boils down to nicotine, caffeine, alcohol, and MJ not really being 'safe' at all so an argument by comparison is pointless. Sometimes I wonder why all of them are not MORE tightly controlled and regulated but then I realize that would fuck up FedGov's revenue stream wouldn't it?
Yes, at some point self-control does have to take over but its against our basest instincts in this regard I think; once you get going on one you start to need more and more. I know you and others will cringe when I use this term but it really is a 'slippery slope'. Not implying anything but I'm happy for you if you were able to 'stop' graduating yourself. I too have been able to do that by not 'graduating' to MJ at all even though its 'safer' than caffeine as many pot-heads would argue.
You asked earlier why I have a 'hatred', as you call it, of this substance. Anecdotal as it is, I've seen first hand what it can do to people's lives in the lives of two people in my family (one, of whom, is no longer with us); which proves to me first-hand what scientific studies have shown about the effects of MJ. So don't even start to evangelize to me how 'safe' it is to use.
Well, anyway, on a happier note, to quote from a friend, 'I think we have a hippie infestation problem here in the X'.