I am not expecting every person on earth to stop consuming meat immediately. If some people in Mongolia have some cows and sheep on their farm, sure, that is already so much better than factory farming. Factory farming makes up about 90% percent of worldwide meat production, and that is the main thing people are talking about when discussing meat production. Factory farming is responsible for massive ecological damage due to animal waste, ie their shit and cows farting methane, on top of being extremely cruel. And then there is the overabundance of antibiotics used to keep the animals somewhat healthy ("healthy" is really a stretch here), which helps diseases build immunities to those antibiotics.

As for cost, meat is heavily subsidized (at least where I live), so we are all paying part of the cost for it through taxes. It is not as cheap as you might think when seeing it in a supermarket.

As for stopping exploitation of animals, that will never happen. It's wishful thinking.

That's just baseless conjecture, just because you lack the imagination to think of a world without or at the very least way less exploitation does not mean it cannot be achieved. And I'd rather have little exploitation than a lot, it's not a binary choice between "changing nothing" and "completely removing exploitation, which is impossible, so let's just do nothing".