Why do all public bathroom doors open in?

Why do bathroom stall doors open in? Aren't they already small enough without making us shove our bodies against the dirty toilet we just spent all our effort to avoid touching, just so you can exit the thing towalk to the sink, which may, or may not, have soap and paper towels, and deffinatly has a nasty door handle we are going to try to open with our feet, legs, elbows, etc?
I hate public restrooms!!! But at least in not in China anymore. Those were & are the worst Bathrooms in the Whole World!

S.C.M