Ok, 1. The average ubuntu user doesn't need to be a programmer or computer genius to use it. The install is almost as simple as windows, needing limited to no manual partitioning. Also, most, if not all of the necessary software can be installed in a manner on minutes through software centre.
2. What does 1 have to do with the other? Just because you don't know some basic things means you don't use it? In that case I MUST not use windows 7 because I don't know how to set up the automatic backups, or how to use notepad, or how to use run-line utilities? It make negative sense what you were attempting to say.
(No offence intended. I didn't intend to come across as hostile. Just trying to speak my mind about your post.)