This hits close to home, since I have a 7 year old 37" 1080i HDTV I am considering replacing. It works perfectly fine and I love it, but the biggest issue is that it only has 1 HDMI port. It seems every media device has an HDMI port now, whereas it wasn't as common when I purchased the TV. So that leaves me needing a switch, which confounds the other TV users in my house as they have to manually press a button next to the TV to switch from gaming to Roku to cable.
My TV also lacks a tuner, which is proving problematic when considering cord-cutting. I can buy an external tuner (with an HDMI out!), but so far I haven't found an ATSC HD tuner with an HDMI out for less than $100. At that point stretching to $350 for an another TV of the same size with more HDMI ports and an ATSC tuner doesn't seem like an outrageous proposition. The old TV becomes a monitor or a Roku station in the guest room.
That being said, my foresight on the need for HDMI ports was crap back in 2006. Am I alone on that?