Is self harm still bad if you’re being responsible about it?

I’ve been doing it recently and everyone has been freaking out over it and trying to get me help but I don’t really see the problem with it. I do it for fun, it feels nice and it’s a good sensation and it looks really nice and it’s great for stress alleviation. it’s not like I’m depressed or anything or trying to escape anything, I do it when I’m bored for fun yet everyone is treating me like I’m a risk. I’m careful with what I do and studied anatomy for it to avoid risky areas. Is it actually that bad and something that should be quit? I’m just curious if I’m out of the loop because of the addiction or if it’s fine. thanks!