I just ordered a Blu-Ray copy of Sing off Amazon yesterday, it's $20 on iTunes and $15 on Amazon for the Blu-Ray/DVD/Digital product. Considering I can keep a high-quality archival copy of the movie in a box and still get a code I can plop into iTunes, though I'll just rip the disc into my Plex library anyway, it's a much better deal.
My list of things I want to watch is longer than I'll ever have time for. Because I'm not rewatching movies, building up a library doesn't make a whole lot of sense for me nor do I want more boxes and discs to be the caretaker of. If I can rent or buy a stream, I'm happy. I don't do it all that often, so the cost isn't really a factor.
Totally reasonable, there's a reason why Redbox/Netflix/iTunes/Amazon/Sony/etc. all offer rentals and I've used them all at one point. If you can't ever see yourself re-watching a movie or only doing so infrequently rentals can make a lot of sense.
I'm a bit of a digital packrat who likes to collect media, but a large chunk of my present movie collection is stuff for my daughter who wants to rewatch the same movie constantly so purchasing content to keep is the way I go 99% of the time.
