declawing is a major surgery involving the amputation of bone. It is not a minor thing, and is painful especially during recovery time which can be weeks. He also will not be able to use normal litter, and will have to use shredded newspaper. Me personally I think it is too painful for me to inflict on my cats. Trimming the nails, the nail caps, and other things to claw on are a better bet.
The paws can become infected afterwards too despite all precautions.
JMO
Wolfy