Something that constantly aggravates me is a person that bets of a HUGE percentage of their chips into a pot, while leaving 15% or less of their chips behind. If you're going to put that much of your chips into the pot, even if your bluffing, it's just best to move them all in.

Chances are, if you're making this kind of move, you're the short stack. Holding on to an extra 300 in chips when you've bet 2000 or more is pointless. Nobody is going to fold when you move in for your last 300, so why not get all your chips into the pot, preflop?

Even if you can somehow fold your hand if someone puts you all in for your remaining 300 (this would be a really stupid move, you've committed yourself to play the hand by moving that much of your stack into the pot) folding would be the wrong option.