A couple of times I was annoyed when I was reading a longer text on my own website at work. I have a very wide screen at works and sentences and alinea just kept going which makes a tiring read. I decided to make a maximum width of 1350 pixels. When your monitor is less wide than 1350 pixels the website will just scale back normally. When you have a much wider monitor like myself, you will have two bars or nothing on both sides. This looks a bit funky but I think it reads better myself.
What do you think?