This. My dad, his friends, and every man I knew when I was little put it in their back pocket. When I got my first wallet, that's where it went and stayed for years. Currently: nothing. I got a cellphone holder on my belt and my keys are hooked on my belt loop. Might have a pen or something, but for the most part my front pockets are empty. Feels more comfortable, in the back feels like it gets pickpockted too easy.