I'm sure there would be colonies of luddites who wanted to embrace a lifestyle which included real meat, whether for religious reasons or not.
Add to religious reasons the fact that certain species' populations can actually get out of control if there is not regulated hunting. Deer populations in some areas, for instance. If you have to kill something, it shouldn't go to waste; that meat should be eaten. You'd definitely still have a reason for venison to be eaten, at the very least, if not other types of meat.