How do amphetamines ruin your life?

Bit of a back story I was a drug addict for many many years and would do anything in front of me, after about 2 years of experimenting with everything I became severely addicted to heroin and benzos. I’ve been clean from everything for years now, been off and on stimulant prescriptions my whole life, went back on vyvanse about 9 months ago and it’s been a life saver… granted I take it as intended. But even back in the day when I’d abuse stims (mostly adderall, vyvanse and meth) I would be extremely productive, even if I was erratic while doing so. I guess I’m just curious how these can take over your life and turn on you?

Edit: I should say I have no doubt they ruin lives and are just as harmful as opiates, benzos, etc. I have many friends that got just as low in life as I did with my DOCs I’m just curious how they’ve turned on y’all