Over the years I have seldom needed one, but there are circumstances that have led to me getting one! 
Some of those circumstances have included my hunting conflicting with "concerts" at school for my daughter and the like, major family events or tight finances at home...For those of you unfamiliar with the term, the Kitchen Pass (KP) I am referring to is the act of getting the OK (permission, lets be honest!) from the spouse or significant other to go hunting. I have hunting buddies on both ends of the spectrum, one that couldn't care less and never asks his wife- and another that has to ask permission for every move he makes all season long!
Seriously though, she has never had a problem with me going. I could be in a bar or something, which I never do, so she is happy with the alternative. I make sure I spend lots of time with my wife and kids in the off-season doing what they want etc....but come sept-dec. well that is my time. They understand my need to go. My kids are just beghinning to hunt so they will be spending alot more time with me huntin. So that will give her some time to herself...which she certainly deserves and needs. I am a lucky dude!