I agree with you both, might be nice to have something in the game
I think this practice is being phased out as people become more aware and concerned about animal welfare, as an example look at circus's and how some countries have made it illegal for them to have animals in the show and others are phasing them on there own accord. And rightly so.
It would be nice if there was no need for Zoo's as they are inherently cruel for animals as well but I fear as time goes on they may be needed more than ever to try and preserve as many of the animal kingdom that we are wiping of the face of the planet as possible. There is nothing special about humans and we are just another animal that happened to rise to the top of the food chain.
Without the invention of the gun we would still be at a serious disadvantage, most animals have better eyesight, smell, hearing and are faster and have better weapons to take out predators than us. Go walking through the bush of Africa in the pitch black and you will realise our rightful place on the planet.