shakran, I'm going to say this one and DON'T make me repeat myself, in all my 2468 years I have NEVER EVER PICKED MY NOSE GODDAMMIT!!
Come to think of it, I don't have a porno stash and I have 8 Pictures of Ditta von tease on my "My Pictures" folder. But then, I do clear my history/cookies quite often because I visit "out there" websites (as I think about it while I type is VERY stupid cause they're all in my bookmarks, very well categorized in folders
) so no, I don't hide my porn ... at least, I do hide but I don't do a good job of it which is OK, I live alone. No one has a chance to use my computer.
So yeah, people hide their porn because they're insecure.