What if cows gave root beer instead of milk? 

what if cows gave root beer instead of milk？we will don't have milk to drink or to make some dessert. i don't  want this things happening, because  i love drink milk，so if there is no milk in the world，i will be mad. if there is ni milk in the world，people will not have energy to do excersise. but if we don't have energy  to do  some sports，we will be fat. if this things still too long time，we body will be weak and we will die. anything have it own good side and bad side.