Reasons to purchase this movie?
Personally having a media collection almost compels me to have a complete set. Yes, I am still into physical media and no I don't really tend to collecting limited editions. I don't care about figurines or have any overwhelming need for Steel-book editions also.
The advent of Digital copies and streaming though seems to me to discourage purchasing physical media and the overall poor audience reception suggest to me that few will actually purchase this at the going rate for Blu-Ray ($23) and 4K ($30) from Amazon doesn't really make owning an actual bargain.