To protect or not?
If you are sitting in the big blind you are sitting in a late position and the choice is simple. If the pot is unraised your bet is already in the pot and you bet according to your hole cards,
Many players sitting in the small blind think that since they have half the money in the pot they must bet, even if they have a nothing hand, This is a sure way to go broke. Sure you are in a late position but value your hand the same way. Remember you are also first to play after the flop.