why O why

I traveled to Grand Rapids MI. to do some training for our dealers. the three of us went to dinner the night before the school at Smokey Bones and the hostess that sat us put us in the only section with a guy waiter. Why if three Guys walk into a restaurant does the host put them with a guy waiter. Would the sever not have a better chance for larger tips if you took three guys and put them with a female server? I would like to point out that this is not the first time this has happened to us as a group or while I have been by myself.