I hate using public restrooms with less than 10 stalls. I get a little gun shy using a restroom with less than 10 stalls particularly in office buildings where I happen to work with people who use those same restrooms. It's true. Case and point, a couple months ago it was rather embarrassing to use the restroom and run into the person who was interviewing me for a position in the restroom beforehand. We ended up chit-chatting as we washed our hands together. It was AWKWARD.
I mean, using the restroom in movie theaters, airports and museums doesn't really bother me. Because the more stalls there are, the more persons can't identify where certain smells, or noises are coming from.