You're comparing pre workouts to steroids lol.I see myself using pre-work out shit before hitting the gym. I recently stopped. But long-term, that shit fucks with your kidneys. Sometimes, people just want to get back to what they use to be, just to get that lil "edge."
Kimbo made a name for himself knocking dudes out on the streets and got signed to MMA/UFC. But as he quickly realized, them MMA boys are the real deal. Kimbo started losing. So he goes to boxing... Overall, he just wasn't a match for those professional fighters. In boxing, (ya'll can say what ya'll want, a few of those fights were fixed) he did what he could. He got bills and mouths to feed.
I respect this dude for what he did. Made a name for himself out of NOTHING.
Bro, do you even lift ?