if the cat has behavioural problems and destroys everything for a reason or another, declawing is preferable to shelter.
It has been proven that more behavioural problems arise from declawing.

True the cat would not scratch the sofa but they often start bitting and develop pain related litter tray problems (As the litter hurts their feet) Some animal become with-drawn and wary of humans.

I personally believe, if the sofa is more important than the cat. Then the cat deserves a new loving home, if this is via a shelter, so be it.

PS. These comments do not apply to people who declawed cats, before they understood what this procedure involved.

I am angry at people who know what is involved and still want to declaw.