As for the collector part, I am a collector, and I like my collection to look good. Having, for an example 11 Star Trek films on DVD, and next to them (in a couple of years) are 2 Bluray DVD's of part 12 & 13, because DVD no longer exists. It will look crap in the shelf, which is why I sold off my 250+ VHS tapes to start all over again with DVD's a couple of years ago, now it seems I may have to start all over again just a few years later? Fuck that.
This is just a personal opinion though, not everyone is as much of a neat-freak as I am when it comes to collecting.
Your posts make it seem like you value the way the boxes look on the shelf more than how the content looks and sounds...
Please correct me if I'm wrong.