Serious question, not an attempt to troll. What kind of people buy these 'smart TVs' and why? For Internet? Doesn't almost everybody have a PC or tablet nowadays anyway?
Well...it almost sounds like 2 questions you have here.
1. Why would you want smart features on a TV?
- Well, this is often for folks that want to watch things streaming like Hulu, Netflix, etc...without having to fumble with multiple remotes and units..all in one spot.
2. Why would you want at TV to watch smart tv content on, because everyone has a PC and/or tablet.
-Well, despite many young folks not watching traditional tv, and even I'm cutting the cord....if you have the means, it is VERY NICE to watch movies and the like on a large, high quality screen. Myself, I also have my main stereo with my large TV in the living room, so my surround sound is quite good and frankly, with my set up, I can't generally think of a good reason to go out to see a movie, I can pause it, my bar is right near by and no assholes on the phone or talking to mess with my movie. Also, I control the volume.
I now have Klipsch for a 5.1 system....and when I get to a larger abode, I'll expand for that to 7.1 or Atmos for even ceiling sound. (K-Horns in front, 15" Klipsch subwoofer, older large Klipsch center channel, and now I scored recently a great pair of older Klipsch Cornwalls for the surround speakers.
So, to go with that large sound, I like a large TV.
Much nicer to sit and enjoy things on that system rather than a tinny speaker on a tablet for a movie....
So, hope that answers what sounded like you're two questions you were asking...