True, and I can see why you prefer it that way. If I moved into a house already pre-wired with coax to multiple rooms, I might consider it as well. No reason not to use the existing infrastructure. Now, if I were doing it from the ground up with a focus on my needs, which are streaming and computer network access, I’d run gig ethernet everywhere. That’s living the dream for me.
As it is, we mostly run wifi with the exceptions of the main television in the living room (uses a Roku hooked via ethernet) and my computer (because to hell with the kids I say, I make the payments, I get to hook directly into the router over ethernet cable).
EDIT: I should note that I’ll never win a parent of the year award with that attitude. 