Have to put a few crazy things right here!
our digestive systems and teeth are more like herbivores? which ones!? Show me the herbivore with a digestive system even slightly resembling a human's? We are most like pigs, confirmed omnivores, and have a highly acidic stomach, short gut etc like carnivores. We share some tiny similarities with some herbivores, which points to an omnivore diet at best...
we don't need to eat meat in the west? We don't need to eat veg either. one thing's for sure though, we have to eat something from the selection available, and living in the west doesn't magically make food appear from thin air - it has to be grown and manufactured the old fashioned way, same as it always was. Just because you can't see it anymore doesn't mean it doesn't go on. And I hope those enjoying their manmade fabrics and vitB12 supplements are volunteering to live next to the factories that make them, and have good ideas about where to get the oil they come from without any environmental destruction, and deal with the waste responsibly....
dairy cows are not milked continuously - even the most intensive systems will milk 3x in 24hrs, and that's pretty rare as the low price of milk doesn't really justify the resources and laour used for a third milking. There are milking robots now which allow the animals to choose when they are milked and the average number of milkings in 24hrs is 2.7ish I think. Some places milk once a day, and most places will dry a cow off after 9 months and she will have a 3month holiday (how much holiday do you get?). They will often suckle their calves naturally for at least 8months, sometimes right up until calving, and some cows which produce too much milk to be dried off without serious mastitis problems may be kept in milk.
They are also 'allosucklers' which means they will share milk (hence having 4 teats despite only having one young to rear at a time, unlike sheep, goats etc which have 2 and two teats) so a human taking the extra is not too big of a jump in imagination: presumably why cattle were among the first animals to be domesticated and have been such a success since. Early humans had very little on their side - no handling systems, no horses to ride at that point - and were going up against beasts that could EASILY kill them if they so wished, so there had to be something in it for the cows to allow it to happen, where other animals didn't.
Wild cattle don't exist any more, we hunted the auroch to extinction, so if we let cattle die out it means their gamble in allowing themselves to become domesticated didn't pay off - we just gave them a massive slap in the face in return for their trust. nice.
'Most' male dairy calves are not slaughtered at birth, they are raised as 'bull beef'. There's no difference between a beef and dairy breed, veal does not mean 'beef from a dairy animal', it just means 'slaughtered when it would ordinarily be suckling it's mother e.g: up to 8mo'. A few are reared for veal (and slaughtered as babies) and a minority are shot at birth. Yes, that's no good, but you don't have to eat veal you can just eat beef and increase demand to ensure they have a longer life.
Pink/rose veal will not routinely be suckled by a mother - the mother is a dairy cow and they do not keep their calves for logistical reasons. They will more than likely be reared on milk powder which is made from the milk produced. Bit of a headfuc there, but until somebody comes up with a scale-able method of hygenically and effectively milking a cow with a calf at foot, that'll be how it is. Some producers do produce veal from beef breeds which suckle their mothers and are slaughtered early, so there's no garantee your veal is from a 'rescued' male dairy calf unless you ask, but it will have had a mother if that's important to you.