You only see this from your perspective, thats what I am trying to explain.
"There is nothing to eat" despite the fridge being full is actually a very common thing and because of that part of many jokes.
Those people are not lying. For them there really is "nothing to do", so if you ask them, that is what they will answer. They do not consider other things to be "something to do" because mount farming, pet battling and running around the fountain in Stormwind is all the same to them.