I don't currently use it or other stimulants because I'm recently graduated, currently unemployed, and looking for work. Well I suppose I take caffeine, but I've mostly cycled off that too, and only take a single 200mg pill per day. If I get a job that requires a steady flow state or a high amount of productivity, I very likely will begin using it again.
I use it because I am not naturally suited for the work. I have a genetic variation(gs224) that makes me tired all of the time and stimulation-deprived. However in our current economy, it seems like the only career path I can take that will work with my abrasive, likely autistic personality while still providing long-term career growth opportunities.