It doesn't have to be an either or situation you know.
You present it like it's either declaw a cat or adopts cats. Shelters around me do not advocate declawing cats. The rescue agency I adopted my cat from put it in their contract that should you want to declaw you are to bring the cat back to them instead (yes yes enforcement yada yada yada). Anyways there's a difference in getting a cat and choosing to automatically declaw for no other reason than the convenience of humans (especially as our knowledge has grown on how declawing can affect cats) and adopting a cat that has already been declawed. FWIW it is banned in 22 countries around the world and seen as cruelty to animals in countries that have banned it. And in recent enough years the majority of those surveyed in the U.S. do not support declawing. Either way unless it is banned it is a personal choice. The OP can obviously make that choice for themselves provided it is allowed where they are at but posters are free to express their opinions on the matter as you have as well.
In order to reduce the population of cats the best thing to do is spay and neuter. The population of cats is not really related to declawing or not declawing cats.
At the shelters here you have to sign a paper stating you will NOT declaw the cat or you can not adopt one! It is cruel to do that to a cat. Declawing is currently illegal in more than two dozen countries- I can't believe the US can be so behind in still allowing this barbaric procedure to be legal.
Eileen Jefferson, DVM, New York state representative for HSVMA, said: "Declawing involves painful amputations – cutting off the last bone of a cat’s digits. When done for convenience, it is medically and ethically unjustifiable. The research consensus is that at least one in five cats show long-term physical or behavioral problems after being declawed."
According to HSVMA and The Paw Project, these problems include litter box avoidance from pain or stress and increased biting in self-defense. These two problems, not furniture destruction, are the documented top behavioral reasons why cats are brought to U.S. shelters.
Assemblymember Linda B. Rosenthal, D-67, introduced the bill last year. It later gained bipartisan support from co-sponsor Sen. Joseph A. Griffo, R-47.
Susan Whittred, DVM, New York co-director for The Paw Project, said: “A relatively high percentage of cats are still being declawed despite all the recommendations against it.
Targeting this problem through legislation is necessary and overdue. This bill is not an infringement on the veterinarian’s role at all. In fact, veterinarians are helping lead the efforts to see it pass."
The American Animal Hospital Association and the American Association of Feline Practitioners have changed their statements in the last year to discourage declawing.