my mum asked me to look at her laptop because "its running slow". opened up her emails, saw 30000+ emails in the deleted items box, all seemed to be chain letters or "LOL FUNNY HERES A CAT GIF". Deleted them all; and got shouted at for "deleting her IMPORTANT emails". apparently, storing key emails in the trash is a common thing...
The moral of the story is that if people are lazier with space management if they don't need to do any. Some guy i know who modded another forum got unlimited pms until he stepped down, and then was chucked back onto the 250 message limit. He hadn't deleted any PMs in 6+ years, and this is a forum with 5,000+ online users at any one time. He'll probably be deleting PMs for the rest of his life...
I've only got 2 PMs; one is some rubbish from someone about a thread in the DB14 forums a year ago; another is from Biggs about a gif I asked him to edit, and is a message that I will cherish always