Well, it depends. If you are someone who watches visually-stimulating movies and TV shows,, buying one of the best OLED TVs could be the best decision you ever made.
If you are a serious gamer, the colors and contrast that you can get from an OLED will only make games such as Assassin’s Creed Odyssey pop that much harder as you play them.
If you are someone who watches a lot of sports, many of the best OLED TVs come with a true 120Hz refresh rate, which makes fast-paced action look way, way better on an OLED.
That said, if you spend most of your time watching the news or reality TV, the extra cost of an OLED may not provide the same sort of benefit. Likewise, if you tend to do most of your TV watching in a bright room, you might be better served by an LED TV since it gets brighter and is less prone to having the picture wash out.