cats or dogs

The longer I live, the more I question how ethical it is to keep pets at all; with cats, for instance, you either give them free reign to go outside and they kill huge numbers of small animals (many or most of which are not pest species) or they have little to no unsupervised outdoors time which can lead to a whole host of psychological and health problems. Neither of those outcomes really seem fair

I mean, I still have and love my itty bitty kitty, but I worry that I shouldn't.