As a breeder, I do not advocate declawing. In fact, I discourage it vehemently. In my contract, I expressly forbid declawing. I require that the owner even thinking along these lines contact me, so that I may advise them on alternatives, and will work closely with them on behavior modification techniques. I will also work closely with their vet to assist in a treatment plan with medications. If all else fails, the cat is returned to my home, with no exceptions. I am a member in good standing of a breed preservation organization, and as such, agreed to uphold their code of ethics which specifically prohibits me from allowing any of my kittens to be declawed.
However, as an individual possessing a personal opinion, I guess the best way to make my point is to say that I agree with Harriet that things are not always so black and white.
Another breeder I know had an experience some time back with an owner who loves the cat that was placed with her very dearly, yet the damage was getting bad. She tried everything, no matter how stupid it seemed. After nearly a year of working closely with the breeder as well as an animal behavior specialist, and both drug therapy and behavior modification techniques, the situation did not improve. This lady was totally heartbroken. The breeder offered to re-home the cat in a multi-cat household, but this lady really didn't want to give the cat up. The breeder explained to her all the reasons against declawing, and why we all feel the way we do about it - and the owner readily agreed that it was ghastly. But it came down to this - the owner loved this cat, otherwise cared for her in all the appropriate ways, and while the breeder offered NUMEROUS times to take back the kitten and replace her with another, ultimately, she chose to let the owner declaw. In her defense, I think she felt she had exhausted every other option open and available to her in order to prevent even more of a behavioral issue for the kitten (frequent changes to environment, food and litter routines, unfamiliar cats, etc.) as well as the owner's heartbreak. As an aside, the cat is doing fine, with no ill-effects. She is now a healthy and happy 4 year old and is a total mushbucket with her owner.
I respect the fact that you also try to educate, we need all the help we can get - but I guess I tend not to see things in such an "either it is right or else it is wrong" sort of way. There are times when I think that declawing is preferable. I think it is preferable to euthanasia, and I think it is preferable to the cat being thrown outside to fend for itself. And while I will continue to uphold the code of ethics of my breeder's organization, I will also continue to hold that as my own personal opinion. Others, of course, are also entitled to theirs.