The downsize here: every local business now has started charging 3% fees for card use vs cash. They don't want to take the hit, which I get, but it'd annoying as it cancels a lot of benefits.
We used to put every monthly utility bill or expense in CC too, for that reason you mentioned. Rack up rewards. But again, the utility companies have caught on and charge fees if it's not ACH.. It's just not worth it anymore.