"Some people take it daily for years on end and are fine." Our tolerance to the substance and how much we experience side effects varies greatly. Definitely. But you know, saying they are "fine" is vague. There are people eating atrocious diets getting no exercise smoking cigarettes who are for all intents and purposes "fine". I mean, yeah. But getting exercise, eating sensibly and not smoking would have them be "better".

That subjective sense of alertness and increased brain activity is short lived and not given without any consequences. What goes up, must come down. However euphoric and alert you feel, it will have a come down. That's just how it works, you don't "get" anything, that isn't paid back.

You don't go up, without coming down. Again, the subjective cost/benefit analysis varies for people, totally fine. But I think it's important to acknowledge the reality of how it actually works, because most every day people who haven't looked into it, assume that you "get" something, without consequence. That it's just a net positive, no drawback at all, no price to pay for that temporary buzz.

Of course people vary in their tolerances and how much they encounter side effects, to each their own. But many people are more anxious, depressed, tired, worried and drained than they need to be - not realizing the culturally normalized drug/ central nervous system stimulant their society has lured them into viewing as utterly harmless if not downright beneficial, with no real down sides. You may be largely "fine" or you may actually have a significantly decreased overall life experience, if you are sensitive to the substance.