KK hand ringgame - commit stack?

[Ethnosphere]

Ok so I tried some fullring again after a long period of just shorthanded games. This might be a trivial hand but just to be sure.

NL100 100bb stacks
Hero: KK

UTG limps
Hero raises to 4,5 from MP
CO, button and UTG all call
flop Q72 with 2 clubs
UTG checks
Hero fires 15 into 20~ pot
CO and button calls, utg folds
Turn offsuit T
pot is 65~

General question: Is this an auto commit my stack and feel happy about it situation?
I feel uncomfortable in these spots. Commiting my stack with just 1 pair but it might just be from previous very bad downswings?