We should commute to work on a 23mm tire because "Pro's ride 23mm tires and 23mm tires have lower rolling resistance?

Pro's often ride 25mm and 28mm in the "Spring Classics" and on the rougher stages of the summer tours. A 23mm has a slight "aero" advantage at speeds above 25mph (of little value to the typical "commuter") and is a tad lighter for climbing mountains. A high quality 25mm tire can match or beat a 23mm tire for rolling resistance, cornering, braking, traction, durability, resistance to flats...

The UK's Cycling Plus editors like the Conti Gatorskins for balancing durability, ride quality, and weight better than most "commuting" tires.