When I was a kid most people in my neighborhood didn't have a TV in their living room either. It would have been too casual. The TV was in a "den" or "family room" and the living room was the formal room where the adults would gather and kids weren't allowed in it.

I would joke with my parents "why is it called a living room when we can't live in it"

For context, TV at that time meant a handful of channels received over the air, and a "big" screen was 19 inches.