I think amphetamine is great. Although I've gone on kicks where I've taken it every day for a month, I have never taken heroic doses of it. To me, a person who's always taken it in micro amounts, it's just like a super cup of coffee.
Newbierock, I couldn't agree more. Amphetamine helps me get shit done. I get very productive, eager to move around, and able to be my best self when I'm on 10mg or so, plus some coffee. The price to pay is that it makes me a bit more... erm... square. My thought processes and interests while I'm speeding are more conventional, less quirky, more rigid. I can see why people say things like, 'Ever since he went on Adderall he's not as cool to be with anymore.'
I really don't consider amphetamine to be a party drug on its own. If I'm at a loooong party that's alcohol and marijuana based, 5mg of amps about 2/3 of the way through gives me just enough energy to stay alert and sociable through the bitter end, but then still be able to sleep.
Amphetamine is a very practical drug, kind of like benzos. It's for keeping me up and motivated, AND ENJOYING IT, whether that's on a double shift at work, during a 12 hour solo drive, or at an unusually long party where there's lots of people I need to visit with. It's not something I would take just for shits and giggles.