You don't need to be in adult to be fucked over by Paypal, though you're probably taking more of a risk.
Your Paypal account can be banned/frozen for any reason at all, or maybe no reason, and maybe you'll even find out why some day, or maybe not. Maybe it won't take you six months to get your frozen account balance back or maybe it will, or maybe you'll never get it back.
Hasn't happened to me, but only because I've always avoided Paypal like the plague, after reading countless horror stories over decades how that's happened to other people.
One of the reasons for bitcoin's creation/adoption is Paypal.
In short: use Paypal if a lot of your buyers are using it and it's worth it, and you can't get them to use something else, but don't rely heavily on Paypal, don't leave any money on it, and don't be surprised if it gets frozen/terminated one day.
Site seems to be gone now, but here you go, 20 years of Paypal Sucks:
https://web.archive.org/web/*/paypalsucks.com