I think it’s just a habit the OP has gotten into. I do the same thing to TV and music I am not all that into. And there’s not all that much I’m into.
We live in a world of multitasking. You’re supposed to be able to do things and many of them, at once.
I love the way at jobs I have now, how the workers all seem to be able to text on cell phones while doing their jobs. They’ve learned how to do two things. Of course when they have to answer the phone AND fax something that’s somehow impossible for them to do two things at once.
If you multitask in one area of your life, it tends to flow over to all areas of your life and before you know it, it controls you.
It could be ADD but I think it’s just a habit you gotten into