The 5 Why's: Keep asking why to find the root cause

You probably have heard of the "5 why's" as a way to get to root cause of a problem or annoyance in your life. Try to state the problem in the title and keep trying to find the answer to "why" in the items below.

Watch this video for inspiration (though you don't have to go overboard like that girl did):

Here's a more serious example:

Keep in mind most things have multiple causes when you ask "why". While your #1 should directly answer "why" for your original problem, you don't necessarily have to do that for #2, #3, and so on. #2 can answer why for the original problem or #1,for example. Basically, #n can answer why for anything from #1 to #n-1 as well as the original problem.