I've been using mine more and more lately, since they cancel out the other noise in the house way better than just cranking my music above everyone else well, maybe its cuz i'm stoned maybe its cuzz i'm still sorta numb from whatever kind of pills my wife has been feeding me, but I just got up to walk away and totally forgot they were there. I have a really long cord on them, so i was almost out the door till I realized it I LOLed at myself then peed on the carpet
Mine are earbuds, and I have really sensitive ears, so I always know they're there. And those damn headsets at work always hurt my ear too bad to not know it's there.
mine is a huge set that if I turn up loud enough my ears ring for days afterwards could be part of reason for some of my hearing loss
i have ear buds and ive left them in a few times i guess. different reasons. sometimes ill be listening to a playlist on my ipod then it will end and ill forget about em. other times idk. i just have em in and dont care about it.