Boshed MDMA weekly for a year, can confirm it fucks you up, and leaves you basically in a constant, severe comedown. If anything, when you get to that level, taking MDMA just gets you back to a "normal", unstable, but you aren't even enjoying it that much. I rarely, rarely take it now, (still love shrooms and acid once a month or so).

Anyway, with normal use, MDMA is amazing at the time, and if you remember the things you felt and the intensity of them it can be a great memory. Fucking great for music, too.