I shouldn't be playing suited connecters/gappers in position in an unraised pot? Sometimes I'll raise a hand like that up in position to put pressure on the blinds/limpers, and other times I limp and look to hit the flop.

Done some basic research on the math behind and I've found the suited connectors and gappers will hit 2 pair, 3 of a kind, straight, flush or a straight or flush draw 20-25% of the time. Those are all playable hands on the flop in my opinion. Is my logic flawed?

-Tim