Yeah, it really is not a bad fold. You were getting 25:1 implied odds if you were to flop a set and stack. 60*25=1500 starting stack. You are only ever flopping a set 12% of the time, or 1:8. Chances are, that even if you flop a set you won't play for stacks often enough to make a set mine profitable. Unless you have superior post flop skills and plan on potentially turning your hand into a bluff, then I would probably muck it. In game I might have called, but thinking about it here and now I just prefer a fold so much more. In fact, I am more a proponent of squeezing and cbetting the flop 65% of the time. (ofc dependent on flop texture) DON's are pretty straight forward.