If I had had my way as a kid, I'd have watched TV all day every day. My dad would say "kids belong outside" and I'd be banished from the house until dinner time.
Wasn't allowed to stay inside and read comic books, either.
At the time I was sure I was being abused, but in retrospect he had the right idea.
TV has always been optimized for engagement and programs are carefully scheduled to keep you watching.