[Phyreball]

I come from a NL background, but I'd say I wouldn't mind going broke playing a set anytime, but I want to get to the point where I can feel that I'm beaten and make a correct fold. There are certainly very obvious situations that a set cannot beat whatever is being represented (four flush, four straight), and you should fold accordingly. However, I think for low stakes, playing a set to the end every time will be +EV.