Ummm... what?I stand corrected. Surely you can regale me with stories about how the bard was blinded, and threw himself on the barbarian's ax. Or a rogue was grappled, and couldn't live with the shame, so he cut his own throat. Bestow curse is pretty nasty too, so maybe the sorcerer who gets cursed fireballs himself. These all must be reasonable things that players do to their PC's all the time; I mean, there must be hundreds of anecdotes about that.....
None of fhose have ever, in fiction or otherwise, ended those conditions.
There can be no anecdotes of those because that's not how it works.
There can be anecdotes of Polymorph being undone via damage, because Polymoprh can be undone via damage.
Now stop arguing in bad faith.