I happened to watch the 'Ecstacy' documentary on Prime last night. I was surprised to see the guy who brought MDMA to the world was sad that it had become a party drug as he believes it's primary purpose could have been to help people psychologically. Definitely worth a watch.
There's no mismatch between being a party drug and helping people psychologically [1]. The only people who think so are the same kind of sad, dull people who were upset at the Finnish prime minister dancing - and since MDMA turned out to be an awesome party drug they had to ban it and punish the ones who had fun.
[1] For me, for example, I didn't have any major traumas before I tried MDMA (so therapy would have been pointless), but I were really shy. MDMA at a party setting helped me realize deeply that there's no reason for being scared of talking and connecting with people.