Before I adopted my cat I thought that declawing was something normal, but after learning that they break the knuckles I just can't support it. When I trim my cat's nails I feel his little knuckles and its really adorable. Also when I'm clipping them I know he is super sensitive with his nails, so I can only imagine how it would feel to have them removed.
The thing that I don't really get is that people want to have an animal in their homes, but they don't like the true animal behaviors so they want to stop them from doing what they naturally do. People want cute and cuddly cats, but when the cat scratches someone its acting bad. In reality it's just responding to its environment and its acting like the animal that it is.