No one, absolutely no one can guarantee that a cat will never get lose outside.
And the pain??
“Declawing is more accurately described by the term de-knuckling and is not merely the removal of the claws, as the term “declawing” implies. In humans, fingernails grow from the skin, but in animals that hunt prey, the claws grow from the bone; therefore, the last bone is amputated so the claw cannot re-grow. The last bone of each of the ten front toes of a cat’s paw is amputated. Also, the tendons, nerves, and ligaments that enable normal function and movement of the paw are severed. An analogous procedure applied to humans would be cutting off each finger at the last joint”.
‘Manhattan Assemblywoman Linda Rosenthal (D) has drawn up a bill that would make New York the first state in the country to officially ban declawing’.
‘Speaking with Gothamist, Rosenthal laid out the logic behind her stance on declawing’.
“There’s no reason to do it unless the animal has [an] infection that is never going away, or if there is a cancer or tumor-related issue in the claw,” she said. “It’s basically done because humans want it done, and I don’t think it’s our right to mutilate our animals for our own satisfaction.”
From : http://www.addictinginfo.org/2015/05/14/new-york-considers-becoming-first-state-to-ban-declawing-cats/