I still love to own DVDs. Streaming is a nice supplement. It's a way to try out new shows, or to get some enjoyment out of a decent (if not spectacular) series that you liked, but maybe not enough to fork out the cash to own. I own quite a few DVD series box sets and have no regrets. One advantage that physical media has over digital and streaming media is the ability to take it with you and share it with others.
It is this reason that the old traditional model of 'I own it' will carry on for another 10-15 years.
The DVD medium will not last beyond that. The Blu-ray medium maybe 20 years.
Look what Microsoft said last week,
Microsoft says streaming digital content will kill Blu-ray
Well streaming HD content is happening but the low bit rates will keep Blu-ray with its Max Video Bitrate of 40 Mbps around for a long time.
I was amazed at CBS Home video doing TOS-R and putting out on Blu-ray and surely there will be some TNG product put out in the same way, just not necessarily the entire seasons.
I just purchased VOY season 1 on DVD today as I know it will not be remastered and put on Blu-ray so why wait? It isn't currently available now to stream on Netflix and I want it
this month. Once it arrives in the mail I'll have it for years as long as I have a player that can play DVD discs.
Since Netflix allowed me to watch DVDs of many series that I probably woudn't want to rewatch 3 times I have been picky when it came to purchasing series. The only series I've so far purchased were
Alias seasons 1,2,3. Band of Brotbhers, The State (MTV 1993-94 series, & VOY season 1.
Buying used DVDs when you can is a good idea. Check out the price differences on Amazon.com for new vs. used.
With digital no loss of quality (unless scratches on DVD).
Try to think 5 years down the road though and
new movies & TV series on Blu-ray you could buy on Blu-ray instead of DVD. Along with HDMI output a Blu-ray player has composite and S-Video standard definition outputs that you can use with a regular TV and you wouldn't feel like you'd be double dipping in 5 years if you don't already own a HDTV.
Now that TV series are put out on Blu-ray in HD you really should get those if you are planning ahead a few years.
CSI (Las Vegas) is a show that put out its 9th season on Blu-ray but then put out season 1 on Blu-ray last year. That is a 10 year old series. It was 9 years old when they put it out but you can own it if you want in HD now.
Most new TV series in the last 2 years are available on Blu-ray.