I don't really agree that MPA is not worth it - it's just you have to know what you're looking for. It's not amphetamine or cocaine. In fact, it's really not very speedy at all. I have found that smoked, snorted and plugged it's not really worth it - wears off very quickly and just leaves you wanting more, although redosing is never satisfying.
Eaten, though, it can be fantastic. The two situations I'd take it in are:
- Going to a party where I intend to drink a lot and I know that if I just use alcohol alone I will feel ill or tired.
- The day after a massive binge where I feel like complete shit but am required to socialise with people who are not going to be using drugs, and want to appear upbeat but not fucked.
Basically, eaten (at around 40mg), it's provides a wonderful, gentle lift for a few hours. On the other hand, sniffing lines of it after having a few drinks is pretty pointless.
Also, unlike a lot of amphetamines and their analogues, the physical effects seem to wear off at pretty much the same as the psychological, so no lying around feeling wired, nor are you forced to take benzos.
I agree about interactions, though. I've mixed it with aMT a couple of times which was probably stupid but seems to have been OK. I've really wanted to mix it with Tramadol and MXE but both seem way too risky.