What do you think happens to male chicks in the egg industry? I'll give you a hint, it involves industrial grinders and pink paste.
Cows produce milk for their young, like all mammals. The "need" to milk them arises from milk production, in which we forcibly impregnate cows and take their young away. You can hardly call something a "need" if it only happens once you purposefully impregnate a cow for its milk and abduct their calves.
And that's disregarding the atrocious conditions in hatcheries and dairy farms.
The egg and dairy industries are the meat industry, and honestly anyone who's vegetarian for "ethical" reasons without immediate plans to become vegan are deluding themselves.
Trump is literally a WWE Hall of Famer.