Nin is a scratcher. I will admit many years ago after trying to train him to scratch on appropriate things, we had him declawed. I know, many people are against this and this was not just something we did. We thought long and hard about it and did try and train him. At the time we were students and he had scratched our coach down to the wood in many places. We knew if we were every going to have nice things and Nin, his claws needed to go.
He went (and Baggy went too, didn't seem fair to have one with claws and one without). He was sore for 2 days. On day 3 or so, Nin goes to the couch and starts to scratch. He scratches for a moment and then stops, looks at his paws, shakes them and continues scratching. He has been scratching every since.
Nin just doesn't scratch the furniture, he loves to scratch our work or gym bags and that sort of thing too. He also jumps up onto the counter in the bathroom and scratches the bad cat in the mirror. That boy will scratch anything!