All the time, they only come off if they'd be in the way for certain things
Most of the time, but sometimes I just don't wear them
Whenever I go somewhere, but not when I'm at home
Whenever I'm at home, but not when I go somewhere
Only at school/work/another specific span of time
Only to see particular things (e.g. to read a sign, then I take them off again)
Sometimes, based on some other criteria
Never, but I probably should wear them
Never, I have vision problems that can't be corrected with prescription lenses
Never, my vision is 20/20 or better