I'm pretty familiar with MDMA (and lotsa other drugs for that matter... had a bit of an experimental period a few years back)
MDMA isn't addicting in the sense that you want to use it all the time, simply because the pleasant effects of it go away if you use it too often. More than once per month takes away all of the (very enjoyable) feelings it gives. Also everyone i know (including myself) that have taken it eventually got bored. It just doesnt give the effect u get the first times anymore. Also it makes u quite retarded when under the influence and u look like crap! The real danger of MDMA is a social one: theres a good chance you stop enjoying parties without it. Meeting intelligent people when you're on it is pretty hard too
And ofcourse there's a list of medical problems, but those are mostly for the group that don't get tired of it and use more and more to still feel something.
Oh and then there's the case of "bad" pills. The ones that make people vomit. They tend to have the drug mcpp in it, and the stupid thing is that those pills almost always have a dose that's too high if u take the entire pill. The MDMA junkies who take multiple ones at the same time can thus get a dangerous toxic dose. I once got one of those things and ended up puking my guts out all night, having terrible stomach cramps and a feverish feeling that lasted my whole sleepless night. After that i switched to MDMA crystals if I'd do anything.
The real addiction causers are coke, amphetamine, ghb and ketamine. Oh and lets not forget marihuana. Very easy to get addicted to marihuana. I used to be. Takes away ambition and it's a mental escape for problems (talking about heavy use).
I personally quit pretty much everything now.. there's still something I do called 4-fmp that I believe isn't illegal yet since it's so unknown. Mild stimulant that increases attention and concentration and makes you feel mildly euphoric, without a big comedown, hangover or impact on sleep.
On the war on drugs: imo the question of whether or not drugs are bad shouldnt even play a big part in the discussion. The real question is: do tougher policies achieve the following goals:
- less users? -> no: compare countries with strict policies to the one with less strict ones. The countries with strict policies have more users.
- less problems for the addicts? -> no. Illegality and higher punishments prevents them from being helped/cured if they're addicted. Help is much harder to come by. Also there's the feedback loop of use -> social isolation -> more use.
Just forbidding and punishing it with years imprisonment etc because drugs are bad for your health is just not pragmatic. It only makes the problems worse.
What's left as an agument?
There's morality. On that issue I think it's my choice what to ingest and not the government's. I'm not harming anyone with it. Only myself. (in my case there's been a buncha good sides to it too that helped me get some problems out of the way though)
I think the real reason to criminalize drug use is this: getting votes. The masses are taught that alcohol and tobacco are okay, and a strong lobby prevents any illegalization. They think that illegal drugs are bad,
a) because they're illegal (law abiding citizens shouldn't question things too much: illegal means it's bad and immoral) and
b) it's unknown and people fear the unknown.
Being tough on drugs wins over the non pragmatic and fearful people who think they have the moral right to decide what other people ingest.
On the topic of drugs being so terribly bad: alcohol and tobacco causes so much more problems/deaths. If anything should be banned it's that.