I got permabanned from reddit for repeatedly trolling some ahs (probably not entirely unjustified). Whenever I create a new account and forget to only log in via a private browser window, the new account will be permabanned as well. So know I go "well, fuck it, I don't need reddit".
I don't even intend to try to find out if I could somehow beg somebody to revoke my ban. After I got banned I just send a reply asking the responsible mod to kindly delete themselves.