My previous experience with operating systems
The first OS I have installed was probably some DOS for a friend or classmate in primary school, I can't remember which. You understand if normal people can't install and configure that properly, as it is considered pretty difficult. I then did winblows a few times, though that's a harder treat. How do you expect a normal user to feel at home with his computer if he can't even install it for himself? It's supposed to be user friendly or so. Also note, that after removing the installer disk and placing it on the shelf does not end your responsibilities. If you install new hardware, software, or just simply switch some setting that change a major part of the system, you will need to get used to handling setup dialogs and wizards. And by the way, if the installation process is usually done by a semi-professional anyway - either in the shop before you buy, or if you ask help from a friend - then that voids the major part of the very common argument against using any unu...