Ok I didn't read all the drama before this post. But I will say. Better to be declawed (fronts only), than sent to a shelter to be put down. There are millions of homeless cats, and if it takes a declaw for one to get a great home, well then that's a small sacrafice for a wonderful long life.
I worked at a veterinarian for several years, and then worked at a cat clinic for about a year. Declawing consists of clipping off the nail and end fingerbone. The nail is expressed out of the sheath and a simple nail clipper (like you would use on animals) is used to clip off that small bone and nail. The animal should be completely sedated as for any surgical procedure, it should never be awake in any capacity. I've seen probably a hundred declaws and never have I seen an animal awake. They do need pain management after, and special litter for a couple weeks. There is some pain and discomfort involved for a couple weeks, and then they should be right as rain. If any cat had pain later on it's because of inept surgical procedure, and well that just means you need to be an informed consumer and get a good vet.
I had 2 cats who were declawed and 3 cats who weren't. Luckily the 3 who weren't were not bad scratchers. The 2 who were declawed were declawed as a stipulation on my rent agreement at the time. Those 2 cats lived long (14 and 18 years) and happy lives.
So, don't let the hysteria get you down. Make an informed decision and do what suits you best. I have the personal opinion that if you take on a cat (or dog), that unless it becomes vicious (or a family member is seriously allergic) you are bound to that animal for the duration of it's lifetime. They are not disposable, can't get rid of it because you don't want to train it not to poop on the floor, etc. So with that in mind, if you are prepared to keep this cat for the duration of it's lifetime (and declawing it make this a reality) then that is far better than turning it out, dropping it off somewhere later, or taking it to a shelter (where it will linger and be put down) when it becomes a scratcher later.
Better to have a happy home with no front claws, than front claws and no home.