I believe there are a multitude of reasons why vinyl is on an upward trend. Certainly there is a nostalgia element involved. For some of us, it brings back fond memories, while for others just discovering vinyl, it creates new ones. But it can't all be nostalgia. If it was, we would see a resurgence of 8-tracks and disco, platform shoes and bell bottoms.
There is certainly something to the logic of dynamics being involved. The loudness wars made everything loud - consistently. Even the new sound leveling plugins to help fight the loudness war won't bring back dynamics - they just make everything sound equally loud. Not until mixing with dynamics in mind takes center stage again will that change (and the sooner that happens the better).
There has been a lot of talk about the mp3 and how bad it sounds. And compared to the original CD, it does. But I also remember "transistor" radios and AM radio stations - before the advent of FM Stereo. I used to listen to that little radio under my pillow every night (thank goodness Radio Shack had the "free battery per month club"). Just about any mp3 file, even the bad ones, still sound better than that transistor/AM radio combination.
I think all of this plays into the resurgence in vinyl. Certainly, when one listens to a LP, you really do listen to it. It is not just the background music. You listen because you are involved - in putting the record on the player, the tone arm, and flipping it over to hear side 2. The record player was the center of the entertainment complex in the house. I remember that our family stereo was a big thing - nice wood cabinets - that matched the rest of the furniture.
In the end, I think there are a lot of reasons you see vinyl making a comeback. But I think a lot of it is for the same reason that books never really died off when the ebook came along. Yes, I have plenty of books on my tablet. But when I want to read, and I mean
really read, I curl up in my easy chair with a good, old fashion, paper book. I think that is why you see vinyl making a comeback. It won't take over the digital formats, but it will be there when you want to listen to good, honest, music. Like a good book, vinyl draws you in and you experience it, not just have it in the background. And you listen because it is important, you want to listen and only listen.
Its honest.