Breeding is a natural instinct and one of the few normal (and fulfilling) activities captive mammals can still participate in.
It may not be noble to force them to breed, sure. But is it a noble to deny them the right to breed if they are naturally inclined?
To be clear, I don't pretend to know the answer, I'm just pointing out that it's a much more complicated moral issue than you are letting on.
Breeding is a natural instinct and one of the few normal (and fulfilling) activities captive mammals can still participate in.
It may not be noble to force them to breed, sure. But is it a noble to deny them the right to breed if they are naturally inclined?
To be clear, I don't pretend to know the answer, I'm just pointing out that it's a much more complicated moral issue than you are letting on.