Hats are for heads. Baseball caps are not hats They are caps. Would you wear a Fedora while playing baseball? Or a Homburg, or a Darby? Certainly not. Cowboy hats are hats. They are not caps, and cowboys do not wear them backwards,. Nor, God forbid, do they wear them sideways. I loved John Kennedy. He was a great man. But he stopped wearing hats, and that ruined mankind. If you are a hat wearer, it is a good bet, that your hat will be removed whilst indoors. Baseball cap wearers do not see the need. Hence the difference.