[GuiMo]

It's sure that on the flop, you're trying to win the pot and on the turn you're calling out of odds. Smile you hit on the riv. The problem i see is that even if you hit your str8 or flush in these kind of hand, you may still be facing a tough decision later in the hand because you can be against a monster and still be way behind.

My point is that you got to be carefull when your chasing something that can already be beated.

-Ok p-flop.
-Ok flop
-I would check and fold the turn because you're beating nothing and villains range is kind of large.
-In this situation, I would call the riv, he's got a good ace, hope he did not boat it, and I'm pretty sure his jaw will drop when he will see your flush.