Maybe urinals aren't the cleanest thing around, but I've always been confused as to why people prefer to pee in bathroom stalls over urinals. I hope people are at least lifting up the seat before they pee, but then you don't want lift the seat with your bare hands, so lots of people don't and leave urine stains on the seat. Those jerks! And then there is the "splash damage" associated with peeing into water from a high distance. On top of it all, you risk seeing horror from an unflushed toilet (mega jerks!).
Urinals are great because there isn't enough time for gravity to accelerate the urine as it hits the water to splash on you. It does suck if you're short and there's no short urinal. Dividers are a nice bonus, but not a requirement for me.