Update: Why use plain narrow template for my blog

I have previously explained why my main blogs are so plain (no graphics) and narrow with "wasted blank space" on both sides if viewed with large screen at Why I use this plain (Minima) template for my main blogs (click BACK button to get back to this page) where I pointed (linked) to a big news website (BBC news) which will have large "wasted blank space" on the right side. Today, while examining