I have a very slow Internet connection (5 Mbps down, and even less for upload). Given that, I always download movies at 720p, since they have low file size, which means I can download them more quickly. Also, I don't notice much of a difference between 1080p and 720p. As for 4K, because I don't have a screen that can display 4K, I consider it to be one of the biggest disk space wasters.
Am I the only one who has this opinion?
I prefer the opposite. I want the best quality I can get often 4K remux. Storage is cheap nowadays and I don't mind waiting a few days for a movie to download. Also I do have a 500/500 connection which helps.