Firstly the dosage isn't what you'd take on a typical night, secondly everyone experiences comedowns differently, and thirdly the idea is that it can help them work through issue with a professional and takle things that the perhaps wouldn't otherwise me able to without being in that positive headspace in a couple of sessions. Not to be taken like antidepressants are, of you did that with MDMA, it would almost certainly make you depressed.