It took me a long time to admit to myself I had a problem, so you're right I would never have answered those questions.
But I'm gonna go out on a limb and guess there's something in your wife's behaviour other than the volume of alcohol she consumes that is concerning you and so much so that you've started to search for help online?
That is the difficulty though, looking in from the outside can be a very lonely and frustrating place, there was no one other than myself who could admit I needed to change and take the steps required to make that change, no one could do it for me!!