Yes, but 480 TVs aren't available that I can find, so the 720 models work fine for SD at a cheaper price than the 1080 models.
Sticking with the original post, there are people that actually do not like HD for whatever reason and prefer to watch non-HD.
Yes there are people that don't care about HD.
SD is a cheaper way to go too.
What about providers and bandwidth availability and costs?
I'm sure this plays a factor too, doesn't it?
Bandwidth is not cheap and is SD not cheaper to offer than HD?
Then there is this:
At 15 feet away, resolution makes no real difference on a 40 inch screen.
And as you get older, the differences probably become even less.
I don't care to spend more than a 32 inch 720 TV costs and at 15 feet, it makes no difference.
I still have a Sharp 32 '' CRT TV that's still kicking, why get rid of it?
It boils down to costs for me also. You have to pay extra for HD at least when I had DirecTV.
"The gold standard of standard definition:"
http://www.directv.com/technology/standard_receiver
Now I have a TV antennas and some Free-to Air Satellite dishes, SD is the majority of the channels.
In conclusion:
1. Some people don't care about HD, as they are not aficionados.
2. They care that SD packages, equipment and lower res TVs are cheaper maybe.