Lactose is also highly insulinogenic even though it has a low glycemic index, which is fine around workouts, but I prefer to keep insulin under control at other times. You're lucky to like the taste, I'll literally choke on the stuff if I try eating more than a cup. One cup of lowfat cottage cheese is about 28g protein and with 24% per(based on your brand) that's still pretty hefty. Hey, if it works for you then keep doing it!