I can perfectly well understand that you might need to ask for a thread to be deleted if you've given away too much personal information by mistake, or if it's descended into abuse, or something like that.
But the FIL loan-with-interest thread, while many posters were challenging the OP's take on the situation, was perfectly respectful IMO. People's perfectly legitimate opinions, and a lot of very helpful advice which must have taken a long time for them to put together, have been deleted; is this simply because izziebear was finding it a bit uncomfortable, or is there some procedure for deciding which threads should be removed that isn't clear from the site guidelines?