My commuter is a 1x9 and I love it. Perfect set-up. I do, however, have 2 cranks one on the left and one on the right. But only one chainring.

One thing that I have noticed is there is pretty substantial chainring wear with a 1x9 because if you do use all the gears, which I do, there's some pretty sharp angles on the chain at times. When I overhaul my drive train and replace my cassette and chain I check the chainring and replace as necessary.