They. Are. Animals. They don't value freedom like humans do, and they don't miss the wild because a vast majority of them have never BEEN to the wild. Almost all animals in zoos today were born there; it's the only existence they know. Maybe if you actually did go to zoos, you'd realize that they're not suffering.

It IS a good argument. When's the last time you even went to a zoo? They do a fantastic job of caring for the well-being of their animals; this isn't the fucking Bronx Zoo from the 1930s. They don't just stick a gorilla in an 8×10 cell with a tire swing anymore; they take very good care to provide realistic replicas of their natural habitats complete with various items for enrichment.