Cats scratch furniture, and unfortunately most humans hate this particular trait. Many cats lose their claws as a result of this very natural behavior, when retraining and rearranging the household could prevent almost all furniture destruction.
As with many other behavior issues, getting ahead of the problem is key to solving it. A cat that’s been allowed to scratch the couch for years (because it’s old) will have trouble learning not to scratch the new couch. But cats learn quickly what they may and may not scratch, and the solution to scratching is easy.