I have no issues with 16:9. I prefer something slightly narrower. What I do mind is designers assuming that everyone has their browser maximised to a 16:9 size

I have no issues with 16:9. I prefer something slightly narrower. What I do mind is designers assuming that everyone has their browser maximised to a 16:9 sized window. There has been inordinate amounts of work done to make things responsive to mobile view, but then that appears to be thrown out the window when a desktop/laptop screen is detected.