I hate leaving stickers on things and I detest seeing clear(ish) protective film left on things such as display windows. And don't get me started on people who buy a new car and leave the plastic covering on the seats.
Someone at work has a friend who was boasting about the blue anodised aluminium logo on his new phone until he peeled off the blue film to reveal its true aluminium colour.
"People who say things won't work are a dime a dozen. People who figure out how to make things work are worth a fortune" - Dave Rat.