I’m hoping that at some point we’d be able to have free range cows that are only hormonally forced to make milk. And no calves need to be born (or killed).
You can keep the calf with the mother half of the time at the cost of some milk and the benefit of less vet costs for the calf, at least. Some very few places do that. They say the cows are much less stressed once they realize the calf will be back by morning after milking.