Watching TV all the times is not the only reason. See the following quote:
"Beth: But that’s not all. You never want to go out and do anything.We stay here all the time, and your apartment is a pigsty. You never do the dishes or the laundry. There are empty pizza boxes from two weeks ago on your kitchen table. It really drivesme up the wall"
The last sentence, I guessed, means that it's not a surpise at all that Al could not find his remote because of his life style.
