Bill Gates is not a normal person and so, he isn't necessarily attuned to what a normal person goes through in life.
Take grocery shopping, for example. Bill Gates told Ellen DeGeneres yesterday that it's been a long time since he went grocery shopping.... although in his defense, most married men probably don't go that often, if at all.
That did not deter Ellen, as she had him play a game in which he had to guess prices of some common grocery items. It didn't go well.