When do you call with small pockets for set value? I have been playing NL25 and NL50 for quite some time now, but I don't remember even a single time I stacked my opponent with a set. I hit relatively rarely and when I do hit, they usually fold on the turn at latest. From what I understand the call20 rule is profitable if you can be sure that you will stack your opponent 1 in 2 times, right? It simply is not the case in my play.
This is why I ask the question - given that your opponents are neither complete fish and maniacs that go bust postflop very often, nor supertight rocks that openraise strong hands only, when do you cold call small pockets preflop?