Back when screens were small it sort of worked, I knew what 13", 15", 17" and 20" screens looked like. Since most monitors fell in that range (yeah, I'm showing my age) that was good enough. Anything bigger than that was "damn huge", anything smaller was "damn small".
But now monitors and especially TVs are immense. I see TVs with diagonals of 30", 55", 65"... That means absolutely nothing to me. I have to convert into centimeters for it to make sense. Fortunately some resellers do put the metric measurement next to the inches, but not everybody does it.
I'm writing this on a 42" display, it was sold as a "TV" but it's just a dumb display as far as I'm concerned, so cheap 1080p monitor really.
Everything bigger than 42" is, in my mind, just unnecessarily big as you have to sit progressively further away from the display to comfortably watch motion pictures.
So, from my perspective, huge displays are what you need for unnecessarily huge houses.
