I'm not cleaning any more than one toilet per bathroom. As a matter of fact, my homes before this were either 2 baths or 2 1/2 baths and I was single when I bought them.
When Ted and I found this house with 3 1/2 baths I made a rule before we ever moved in. We use the bath in the master and the one in the bedroom that we use as an office (other side of house). The other 2 baths are for guests. Period. No exceptions. I sure as heck did not want to be cleaning 4 toilets on a regular basis.