I think all public restrooms are pretty nasty, I clean both as well. In public, I always stand up to pee, cuz well, I think they're nasty, but won't use urinal cuz I think that's nasty too...At home or someones home I know, I always sit, but that's for diff reasons.
ps. if have grs, def gonna be carrying some sanitizing stuff or alcohol wipes to clean before I go lol