Also food for thought, if you only played profitable hands UTG(This should be the case @ 2NL obviously) your hands wouldn't be as profitable if you had marginal hands in your opening range. IE player who opens only AA. Everyone knows this so everyone folds, he makes 1.5bb/hand w/ AA which is fine and dandy but think of a villain who plays his 72 exactly like his AA(Obviously not a profitable strategy but good for arguments sake). His AA now becomes VERY VERY profitable since his opponents will be happy to play against someone with 16 combinations of 72 and just 6 combinations of aces.
FFS don't go start opening 72 UTG cause it adds value to your AA. It's just something to think about.