I have boxes of dvds and blu ray discs. I have a Sony blu ray player that I mostly use to play music videos in surround sound. I have a Pioneer Elite dvd player sitting in a box as a backup, but it doesn't do blu ray.
I might watch for a deal on a blu ray player just to have one in the event that my Sony craps out. I really don't think a lot of what I have on media is available from streaming. At least not for free.