My isp will throttle my internet speed after too much streaming (of anything) and there is no viable alternative in my area. My pc can't handle pc-vr video so DLNA it is.
Steaming is more convenient even if quality is slightly less. If I had infinite storage space maybe different story. I like bouncing around to random new things.
Downloading will get me throttled faster so not really a happy backup, but is nice to save those winners.