exploiting a hole on g2

In this game I messed up my pawn structure early in the game, but used the hole in my pawn structure on g2 to create a winning attack.  I'm interested in these kind of attacks, because your opponent will almost always steer a game this direction.  Is messing up the pawn structure always bad?  what about taking with a b pawn when the opponed trades a bishop for a night on c3?  The result pushes more pawns toward the center.