It's extremely good for the cats....my Raphael sports a HUGE 15 cm long and 3 cm wide (at its widest point) scar all the way down his back that he got at just 10 months old as an un-neutered wandering tom. Had we not trapped and neutered him (we would have returned him, but he turned out to be a big lovebug once his boys were removed), he would have died out there, fighting on the streets. He had an abscess and a huge infection and 7 years later, the hair on that scar isn't coming back any time soon.
Even if you say 'well, I'm going to keep them indoors,' it becomes an unhappy arrangement for owner and cat alike. You are denying the cat something that it has made it its sole business to seek out, and you're paying the damages with all of the spraying, aggression, caterwauling, etc. You have a very frustrated and unhappy cat on your hands.
Not to mention that fact that 3 to 4 million animals die in shelteres every year (at the hands of people, mind you) because there are so many extra, unwanted pets that could have been prevented through S/N.
Human overpopulation....well, that's its own problem which has a whole different set of ethical concerns. Apples to oranges.
Even if you say 'well, I'm going to keep them indoors,' it becomes an unhappy arrangement for owner and cat alike. You are denying the cat something that it has made it its sole business to seek out, and you're paying the damages with all of the spraying, aggression, caterwauling, etc. You have a very frustrated and unhappy cat on your hands.
Not to mention that fact that 3 to 4 million animals die in shelteres every year (at the hands of people, mind you) because there are so many extra, unwanted pets that could have been prevented through S/N.
Human overpopulation....well, that's its own problem which has a whole different set of ethical concerns. Apples to oranges.