Honestly I think the whole risk-seeking behaviour stuff is shit and doesn't apply. It's more about social stigma, preconceptions, sensibility and all that. Maturity, of course, but I know of far too much girls who were older than me and I'd really not call 'mature' - no offence intended! I'm absolutely not the average stereotypical male, admitted I have this over-sensitivity / para-asperger shit that very probably lead to all the drug use in the end. The majority of friends I made were females, but as the nature of this is, it eventually becomes more and more difficult (not necessarily because of me - regarding these points, I'm quite un-complicated. At least something.

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But the points about message boards, internet use etc. are really true and interesting!
These girls who were drug users, all - really - had a much worse risk seeking and taking profile than me. I'm differing from any drug users I know of (in reality at least) in these points that I'm really interested and curious about the matter and science, and hate to get fucked up or socialise with such people ... nobody's free of making mistakes of course, I have done mine too, but well.. you know what I'm trying to say.
But it's dazzling to remember these stories (okay, they were heroin users, one an ex-addict, the other- a classmate, I found it out accidentally- still active) of careless living, emotional rollercoasters, borderline personality, prostitution and all that. One day I had some catatonic girl lying on my couch because I failed to hide my MXE stash enough and she, used to bad cut shit that's always 'the best pure heroin in town', took a huge line ... there I really feared of her life. Luckily it was a dissociative and not some fuckin' opioid.
It's strange but somehow quite a few of drug users seem to live a bit in their own reality. Everyone sees his use as more or less responsible, even if they're blacking out every second day and there are more burn holes than actual duvet cover on their bed. Sorry if I'm ranting. Stuff like that made me not to socialise any more with drug users in real life.
Women are more likely to degrade themselves to get a fix though. I've been offered "free" drugs for a blowjob or a fuck... I'm sure it happens to men too but less often.
This is a crazy fact of society too. There are men probably who do this too, but then both parties are males. No woman wants to hook up with a fucked up guy ever, but many men do this all over the way ...