Physical idleness, overeating, smoking, drinking. You can dodge a lot of the risks just by never getting fat, staying active and being moderate/sparing with food, drink, and drugs.
Gluttony and sloth. I would also say wrath, being mad all the time is bad not just for those around you but also hard on your own body.
The average earnings per month on onlyfans is something like $3 a month, most people doing that are not making millions, those are outliers.
I would bet AVERAGE earnings for developers are the same or higher.