I agree with Henry's logic that there is an inherent risk with wood floors. And I too have a wife that appreciates the wood floors. Since I have rarely succeeded in overtly winning a position in the battle of the sexes, my solution was to run underlayment in the kitchen that goes up to, but not under the cabinets and appliances. Under the appliance cavities, I use a separate thicker piece of underlayment which has a rubber sheet glued to it and a couple inches up the walls and cabinet. The finished wood floor runs up to, but not under the cabinets. Leaks do not go undetected causing damage, and we have not had the problems.
Although I am not a realtor, where I live in California, and in the type of custom home we have, vinyl is simply out of the question for resale reasons, regardless of practicality. So that colors my opinion somewhat.