I never owned a TV until last year when I bought a portable.
But I have owned 5 video recorders, & 4 TV cards for PC's in the last 20 years. Like all things: to avoid anything that is not harmful, completely, is extreme. TV is a time watser, but then lying on the beach using up your risk factor for melanoma is a time waster, but there are people with jobs that don't allow them to switch off fully day to day and swapping a week of oxytocin for all that cortisol is beneficial to life. Personbally I found other ways to top up on oxytocin but whatever works for you - like ceilidh dancing. TV is mental wallpaper mostly, but it can dilute that cortisol if you have too much.