Obviously it's the minority (<1%) of users who are abusing the drug at anywhere near that level. I'm sure that the positive effects are long gone by that point, but I think people who abuse to that extent have become dependent on MDMA in order to feel normal (or have convinced themselves that this is the case). While I'm sure most of these people aren't consuming pure MDMA, there's likely some cases where it is still what's really being used.
Anyways, I've seen many people claiming to have done this (or having friends who have done this) on Reddit:
Lots of these cases may be false, but there still seems to be at least a few real cases of this. Of course, that's no reason to make the substance illegal (and especially not a reason to stop studies attempting to use it). Better regulation as a controlled substance is probably the best solution (i.e. enforcing the 2-3 month rule by only allowing MDMA to be purchased at those intervals).
I wouldn't put too much stock in these Reddit testimonials. I agree, there are definitely cases where individuals have used MDMA chronically, but I believe the percentage is much, much less than 1% of users.
There are also cases of individuals who believe they need to eat glass on a daily basis.
Anyone can convince themselves of anything if they want to believe it badly enough. I would be willing to bet that most of these chronic users would not exist in the first place had they sufficient knowledge about the drug.
Anyways, I've seen many people claiming to have done this (or having friends who have done this) on Reddit:
https://www.reddit.com/r/Drugs/comments/45sgbe/daily_mdma_us... https://www.reddit.com/r/Drugs/comments/1ldmka/so_really_how... https://www.reddit.com/r/MDMA/comments/2765jb/i_used_100mg_o... https://www.reddit.com/r/MDMA/comments/211jkj/ive_been_rolli...
Lots of these cases may be false, but there still seems to be at least a few real cases of this. Of course, that's no reason to make the substance illegal (and especially not a reason to stop studies attempting to use it). Better regulation as a controlled substance is probably the best solution (i.e. enforcing the 2-3 month rule by only allowing MDMA to be purchased at those intervals).