I spend 9+ hours a day reading a computer screen at work.
Off-topic, kind of (but maybe not)
I've never really understood this sentiment. I too spend my working life in front of a computer screen. This time, however, is not spent reading gaming material. It is spent coding and running simulations and writing papers and reading papers. When I get home, I plunk down in front of my own computer, and do things that I like, such as reading gaming material and playing games.
Other than the medium itself, I don't see a similarity between working on a computer and leisure time on a computer. Heck, other than a remote instead of a keyboard, watching TV could be considered just more "screen time". The difference is the content.
Tongue firmly in cheek, and hyperbole dial set to eleven, here are some other examples of "I do X at work, so I'm not going to at home."
"I spend all day at work sitting in a chair. When I get home, I only like to stand."
"I have a toilet at work. When I get home, I'm going to whiz outside."
"I drive all day long for work. I'm not going to drive to the grocery store on my own time, we'll scrounge the neighbourhood for food."