We didn't watch
any television, movies, dvds..... NONE, including YouTube, Veggie Tales or Andy Griffith.... until a few years ago. We do now.
I haven't noticed any difference, period. Before, we spent time on the internet, reading books, whatever. Now, we watch movies and tv shows together (among other things, of course). We are no more or less productive than we were, spend no more or less time together, are no more nor less richer.
edit to add:
On second thought, come to think of it, I'd say our life is slightly richer because of adding tv shows/movies, etc. We probably do spend a little more time together because of it..... laughing, sharing memories, sharing punch lines. But I certainly didn't find that the life we had before tv was richer than the one we have now.