(throwaway just in case, although i do not keep it a secret from friends)
tl;dr; No, amphetamines are not pleasant/euphoric for everyone. Not everyone get high/wired/"sped up" on it. Not a wonder drug for everyone. May help with depression induced by anxiety induced by not getting shit done (not necessarily by getting something done, but instead switching attention away from things not done).
My whole life I was not able to do much of mental work during the day, with my most productive time being around midnight +- 3-4 hours. I kinda just lived with it considering it being due to the way I grew up. I got my first full time job at around 25 yo (before that it was freelancing) and got hit hard with a "normal" schedule (be at work at 8am, leave office at 5pm, try to fall asleep at 11pm to be ready to wake at 7am next day). That was a time I started drinking coffee. It used to give me goosebumps, even at a small sip from a typical office low-end brewing machine. Did not really helped much, but I think it gave me that initial boost and I stuck with it. Nowadays I almost never drink tea (used to be my exclusive brewed beverage) and mostly drink coffee.
Fast forward in my earlier 30ties. I get quite regularly severe depression-like (never diagnosed) periods. Trying different things, reading a lot online. Eventually meeting with psychiatrist explaining what is going on (can't do stuff during the day, getting depressed quite regularly about it, bunch of other shit) suspecting all of that causing anxiety which metamorphosing into depression. Honestly, I wasn't quite sure if it is true physiological condition or just some period in my life where my habits and life stage got in conflicts with each others. I read about ADHD and it seemed quite familiar. I also considered bi-polar condition, but psychiatrist ruled it out.
As for ADHD, psychiatrist was very reluctant to write such a diagnose given that I had relatively good life (good income, lack of destructive impulsive actions affecting life quality, family, job, etc). He started me at 5mg extended release. It did literally nothing. Over months trying he bumped it to 25mg XR and after that failed to produce any noticeable effect, he suggested to try 20mg instant release twice a day. Safe long-term maintenance dose accordingly to FDA is 70mg. At that point I certainly felt some effect, but I am not quite sure it is what everyone think it feels like.
First of all, very counter-intuitive - amphetamine often makes me sleepy and tired. But if I try to take a nap, I almost never can truly fall asleep. Most of the time I just end up laying in the bed with closed eyes. The whole experience doesn't feel energizing or euphoric at all.
Secondly, on many days it appears to reduce anxiety about "getting something done" to the point where I did not experience my regular depression episodes this year.
With instant release, I have to take it twice a day. I often forget to take second pill. Sometimes I forget to take a first one. I tried nicotine vape earlier, and i dont think i ever forgot to take vape mod with me, or keeping it full and charged.
With 20mg instant release I sometimes experienced "locked down" feeling, which I found quite unpleasant. Not sure if it is that "focus" feeling everyone is talking about, but it certainly was different from focus I get when I am "in the zone" (the pleasant one). My solution was to break 20mg in half and take 10mg each 2hrs. Downside - I get more chances to forget about it during the day.
Going higher than 20mg twice a day seems to be pointless, as I already prefer to break 20mg twice a day to 10mg four times a day. It also raises blood pressure noticeably, and I would expect higher dose will do it even more. Effects of it are certainly not pleasant enough for me to even consider taking it recreationally. But it seems to help with depression/anxiety episodes - so far one year, will see how it will feel next spring, as it is the time I had the most of these episodes. So it seems this crutch is helping me somewhat.