Finding restrooms in restaurants

Why is it so damn hard to find a restroom in a restaurant?

Why is it that I have to walk into kitchens and service areas before I find that elusive alcove with the little man on the door? Why do I have to wander aimlessly among bemused diners looking for a place to relieve myself? I can't be the only one.

It seems that restrooms are well advertised, or at least discoverable, in every public place with the exception of restaurants. This is strange to me, as restaurants directly feed the need for restrooms. Even McDonalds are hiding them, for Pete's sake.

I understand the desire to mask certain bodily functions in dining areas. I understand that traditional restroom signs may clash with the decor. But can you meet me halfway? How about a little man sconce on the wall near a restroom? Or a lady-with-incredibly-starched-skirt lamp? Give me something to point me in the right direction.