Without a TV I'd miss the ability to "turn something on without being paralysed by choice". Usually mealtimes or when very tired, I just want to turn on the TV and flick through a handful of channels and just watch whatever there is on.
It's mainly a UX thing. There's just more friction with TV apps even if they do have a "watch live" option. Channel hopping is just much harder.
It isn't much different to open YouTube, pick whatever's recommended, and just let autoplay pick the next video to play. You get better tailored content.
YouTube is deep in my filter bubble whereas channel hopping TV channels is a moderately curated selection.
(and YouTube in private browsing is just a firehose of automated recommendations).
There's probably about 10 channels worth watching on UK Freeview and the hit rate is fairly high when my standards are low but I want something easy and engaging.
It's mainly a UX thing. There's just more friction with TV apps even if they do have a "watch live" option. Channel hopping is just much harder.