what would happen if cows gave rootbeer instead of milk

if cows gave root beer instead of milk the whole entire world will be over weight and it wouldn't be a good thing. every one would probably die at a young age and there wouldn't be any way of changing it. every one will be so use to drinking milk that they couldn't get off of it and wouldn't get the vitamines that they need so they would die at a very young age and there would be absolutley no way to protect that. unless you tried super hard to get all of the nutrients that is in mil get that from other food and it would be fine for the rest of your life span. every single person in the whole entire world would be super fat and they couldnt get all of the  nutrients that is nessesary for life. you must have calcuim it will be hard to live without.