I think unless you plan to have lots of kittens, your female and male cats should be neutered. I also really feel badly for all the poor feral cats that are out there that just keep multiplying. My wife and I have adopted several feral cats and had them neutered. they were difficult as pets for the first few years, but we have had them now for over 12 years, and I doubt that any one of the 5 we took in would still be alive if we had not rescued them. Also have a male dog that is neutered, because we have no plans on studding him out. he is an AKC pedigree anyway.