1, MDMA isnt crack, its not even close. its not even close to meth either, nor is it related to meth even though it contains the same base structure (so dont spell its full name out and highlight the 'methamphetamine' part, i wont have to type up an essay)
and 2, its usage may be peaking in the bay but worldwide, 2001 was the peak year of use, and its been slightly declining ever since. That drug is not very damaging unless youre doing it multiple times a month.
Just be smart and dont fry your head off popping every week, and you got nothing to worry about.
And the ones that ruin their lives over a drug like E? ... Well, theyre pitiful, and thats natural selection at work. Fuck 'em , lets move on. I got through it, they can too.