Not everyone has a TV in their bedroom, but many people do. They watch the morning news as they get ready for work, or watch a show or movie before they go to sleep. And a fair number of people have a small TV in the kitchen, as well.
I don't have a TV in my bedroom. One of my friends is a single guy who lives alone has a TV in every room except the bathroom--living room, bedroom, kitchen. I think that's a bit of overkill, but it works for him.
Quite often, the main TV in the house is given over to kids and video games for a large part of the day, if there are kids in the family.