No antibiotics, no inhumane treatment, the exact texture, fat content, and taste that I want? Sign me the fuck up.
No more gristle, no more lopsided fat deposits, no more oddly shaped cuts of meat that cook too fast on one end and too slow on the other. Is it going to be weird and artificial at the start? Yep. But imagine if every cut was the exact same cut. Same cooking method, same timing, and you're done. And fucking eat it ultra-rare if you want, because it won't have pathogens in it!
And it WILL BE FRESH!!! Grow it as you need it. Ramp up in the summer, around holidays, and ramp down after that. No long train of animals ready for slaughter > slaughter > delivery > not enough sold > put on sale > reprint the expiration date and put on super-sale, etc. Hell, if done right you could even slow down or halt growth. You can't really do that with live animals in factory farms, but you might be able to do that with meat in a lab.