Why? My time is valuable. If they want such detailed feedback (i.e. free business advice) from me, they can compensate me for it. I would get nothing in return for spending my time explaining why I'm not going to give them any more of my money.
Presumably they'll already make you waste time talking to a human when you close your account. Might as well mention the captcha to make public the distaste for recaptcha as we are now on this forum.
