I am a software developer based in London, UK who uses several stimulants / drugs in my day-to-day work, I also understand that I am the exception to the rule and whilst I do use a number of substances for many reasons, there are very few of my colleagues that do the same - in fact I have very few colleagues that I work closely with anyway.
To give you some context - I work for a financial group and mostly work on software to aid their day to day workflows. The simplest terms I can put it in is that I give a lot of rich city boys the tools to make them a lot of money and in return they pay me what I consider to be an obscene salary. I spend most of my days in the basement of one of those buildings in the city, in a small office, pretty much alone with headphones on and sometimes going days without actually talking to people. I like it.
I am diagnosed with ADHD which is not as commonly diagnosed in adults in the UK ( but becoming more commonly reconsised ) - for that I take methylphenidate ( commonly known as Ritalin in the US ) and that helps immensely with focus. I also vape cannabis regularly that also helps with the focus as my dose wears off. Sometimes, for those long weekend sessions of coding, I will use LSD.
The effects are - I dont have to loathe myself whilst doing my job. In all honesty, I hate my job and the people I work for, but at the same time, I got bills to pay and want to retire at a younger age than most. I also find that the drugs make me zone-in on a task and I am just able to get it done quicker. I write significantly better code high, than not.
I'd love to have a story for you, but in all honesty my life is pretty boring beyond the fact that some of the stuff I have to do is questionable, especially for those people who might be using online trading software.
Other than that, picture a guy, standing ( yeah, im one of those standing desk people ) in a small, fairly dimly lit office in the basement of a multi-billion pound financial bohemoth, with headphones on blasting some music whilst bashing away at a keyboard and thats pretty much my life.