Go play Halo 1 for a few hours.
Seriously though, aiming is good! Just know when to aim vs when to hipfire. Believe it or not there are effective times to "spray" via hipfire, but that doesn't mean it's more effective on a regular basis.
Keep practicing your hipfiring for those critical situations when you lock heads with an enemy, but if you're running laser sight, I'd trade it in an instant for Quickdraw.