While I probably haven't encountered it any more than the ordinary person in my own life, I do know what OCD can do to a person. I don't want to go into details on a public forum for the sake of the privacy of said person, but I've seen what it can cause - just how far it can distort someone's thinking, and make them completely unable to do basic tasks or interact with people in everyday conversation. Heck, it's downright scary at points. It irks me when people talk about being picky with certain things (the 'need to keep things tidy and in order' stuff) and say "lol I'm so OCD about that" when they obviously have no idea what the real deal is like, and how serious of a problem it can actually be. Even though I am the sort of person who's very picky about keeping things systematic and organized, I wouldn't call it OCD... It's nowhere near that extensive.