Sandi, I do respect your opinion, though I disagree about declawing. It's common practice here so people naturally assume it's humane, but that doesn't make it so. I do agree though that it's harder on older cats than it is on kittens.
Neutering/spaying is very different than declawing. Declawing is like cosmetic surgery, whereas neutering/spaying is essentially life-saving surgery. Millions of unwanted and homeless animals are born, suffer, and die because people don't spay/neuter. All this suffering could be completely avoided by getting animals fixed.
Declawing is a radical solution to a problem. It's like someone who doesn't like cat fur on their furniture giving the cat an operation to permanently remove all of the cat's fur. It's like people who have their dogs de-barked. Claws are like fur--part of the package.
On the other hand, spaying/neutering is a humane solution to a real problem.