I really don't understand the fold.
What are we affraid of; QQ, KK, 33, QK?

KK is unlikely as we hold a K, 33 and QQ could be and KQ would be a weird call preflop.

Aren't draws as much of opps range as made hands?
QJ, any FD. I'd call and reevaluate the turn.
(hoping to see a check in front on a blank card. Otherwise the money is probably going in, so maybe putting it in on the flop is just as good)