The only behavior of my cats that gets annoying is their barfing..... but humans barf too....Not to engage in argument or judge anyone, but declawing is the equivalent of removing your fingers up to the first knuckle. Not really a good thing to do. Not to mention, the cat is defenseless if it gets out.
Spaying an neutering is good practice. Not the same.
Cats gonna cat, dogs gonna dogs, birds gonna bird. Etc. I'm amused by people who get all upset at animals not acting like humans. If you're not comfortable with animal behaviors, think for a while before bringing one into the house.