When should you delete your own comment, and when should you leave it?

Deleting a comment is a private action that removes the content from public view while leaving a "[deleted]" placeholder in the thread structure. The decision to delete versus leave involves weighing transparency and accountability against the legitimate reasons to remove content you posted. Deleting is clearly appropriate when you discover a factual error that you cannot adequately correct through an edit and that might cause ongoing harm if left up — particularly if the comment contained misinformation in a medical, legal, or safety context. It is also appropriate when you posted by mistake (wrong account, wrong thread, or accidentally posted an incomplete draft), when your comment revealed personal information about yourself or others that you now regret sharing, or when you posted in a moment of anger and the comment was purely personal attack with no substantive content worth preserving. Leaving a comment in place, even a wrong or embarrassing one, is generally the more honest approach when others have already replied to it. Deleting your comment after people have responded to it leaves those replies contextless, which is unfair to the people who engaged in good faith. In these cases, editing the comment to note the correction and keeping the original context visible is preferable to deletion. Something like "Edit: I was wrong about this — [correct information]" serves transparency better than silently removing the claim. Deleting a comment to avoid accountability for a controversial or embarrassing statement — "delete-before-the-downvotes-pile-up" behavior — is widely recognized and perceived as bad faith participation. Regular community members notice when someone posts something contentious and then deletes it when it receives pushback, and this pattern damages your reputation in the community over time. The integrity of staying with a difficult comment and engaging honestly with the criticism it attracted often earns more respect than the comment having been absent would have.