Reading in the office is just fine
If what you're reading is work-related of course. I've scheduled a reading time to catch up on journals/magazines for first thing in the morning every second Tuesday. It has helped me get through a few things.
I also usually eat at my desk and read at lunch. Usually I read for pleasure (right now I'm almost done the Complete Works of Shakespeare, again) because it gives me a great break, which I really think breaks need to be. But sometimes I'll read work-related books and longer articles at lunch. I'm lucky to have a door I can close, so you may need to remove yourself to a boardroom or the cafe down the street to get some reading in, if you work in a culture that thrives on interruptions.
I read a lot of personal fiction/non-fiction in the evenings and on weekends. With kids, I say the more books around the better and the more often my son sees me reading the better!
In my opinion, reading a variety of media/genres/types etc opens your mind, helps keep you engaged and in the end is a benefit to you, your family and whatever organization you work for/with.