It probably has a lot to do with what you're writing. I've read your bio and see you write very technical things. Given the same situation, I have to have things quiet but not totally to help with concentration.
I write a hub every now and then but I've been writing a children's book. It's the second one and in it's final edits now. I write primarily sitting on the sofa or at the dining table, both of which are within view of the TV and my playing 4 YO son. If I'm up against a deadline, I'll go to the library but that happens seldom.
I guess it's all in what you're use to and your ability to tune things out. Sometimes, that's easy and others, not so much.