The exciting future of streaming TV is going to be in personalization
If I were just starting out I'd probably stream but...I still prefer downloading.
My wife also has just about every streaming device, streaming services and cable services so... I have been able to experience A LOT of media types. She gave me a Roku last Christmas. While I saw the potential I still felt like it was not "quite there" yet. Navigation felt clunky, limited personalization. Even with all that variety available to me (that is basically free)... I still prefer downloaded content.
Granted downloading requires more gear, waiting time and storage space, etc...