Future generations will look back on this era's treatment of animals as barbaric. They will have the benefit of being able to grow vat meat identical to any steak and perform drug testing purely in-silico, so they will not need to use animals in the way we do now, but still, when you remove the economic/scientific rationale and look at the fundamentals of our treatment of animals, you can't help feeling at least a little bit saddened by it.
Or maybe they won't care and have less empathy for animals. If anything, it seems like if there were to be evolutional pressure, it would favorize humans sacrificing animals to improve humans' condition.
