Also if you're an inexperienced flyer and have a tight connection, you may not have the time to find one in an unfamiliar airport but a bar or restaurant is almost always in sight.
I haven't seen any, unless you're talking about using the bathroom sinks?
In which case, no thanks. Even with a touch less sensor people can still (and do) touch the area where the water comes out. Flying is stressful enough as it is. I don't want to have to think about potentially drinking tainted water (pun intended).
Also if you're an inexperienced flyer and have a tight connection, you may not have the time to find one in an unfamiliar airport but a bar or restaurant is almost always in sight.