"An old AMG at 20 is better than a new Ferrari at 60."
There's a slider for how well you want to live your early vs late life. If you work hard, you'll be better off later, and if you go crazy early on, you'll be worse off later. However, there is a point in that you can't catch up on 20-year-old sex, getting drunk or drugged up out of your mind or general fun with friends at 60.
The most I've seen was a ~1k EUR monthly budget for drugs by a person I knew whose main hobby was drugs. It's not astronomical, but we were both students in ~300 EUR/month dorms. It also affected his career progress. Lectures at 8 AM don't mix well with coke the night before.
With cars, the sky's the limit. I'm making 6 digits, and I can still ruin myself financially in a weekend.
And it's not just financially. I love motorcycles because they're cheap, but if I have a proper accident, it'd set me back months if not forever.