I eat super clean on the weekdays just so i can pound a burrito and some tecates on weekend nights.
It may be personal but its on topic, my digestive system cant keep up with a bodybuilders diet... I just throw way tooo much whole food at it. Once that burrito and alcohol arrive, they clean house and I wake up looking leaner than ever sunday morning.
We lift weights and manipulate our diets so that we'll look good naked. Sure, it's healthy too, and we'll probably live a longer and more productive life than the average guy, but mostly it's about the naked thing.