I set it up after making a regrettable post that was replied to before I could delete it. It wasn't the worst thing I could've posted, but as I recall it wasn't a fair reply to whoever it was. I strongly dislike people doing that to me because it completely disrupts the conversation flow. So to resolve the conflict, I give myself two minutes to be able to freely delete things, which is still short enough that the conversation won't be unduly delayed.