SP3C14L F34TUR3Z, N1GG4!!!!!1!!!
That is, in the few blu-rays that actually include them. And I guess I can keep an entire season of a show on a single disc. Boxsets are annoying. Plus, if you're some faggot that watches anime, blu-ray cases often are manufactured to a standard of quality that you don't see in most anime DVDs.
Maybe a few high end VCRs had audio during fast forward or slow motion with audio options but I think every VCR my family ever owned just had fast forward with the usual lines across the screen and a loud motor noise coming from the VCR but no audio playing and I think the highest end VCRs we ever owned, which were Sony's with that multi-speed fast forward/frame advance/pause/reverse frame advance/review (visual rewind) dial at the bottom of the remote, still didn't play audio at any speed other than regular playing speed.
Holodisc or whatever million different formats were supposed to be the upgrades after blu-ray but the greater media industry abruptly gave up on because streaming is a goldmine for media conglomerates. There were formats coming out only a few years after blu-ray became standard that could have easily been much better but were never given any funding.
I refuse to watch anything not on Betamax. Unfortunately this means I have not watched any movie made after 1990. Did that Tom Hanks guy's career ever go anywhere? He seemed like a very promising young talent in Turner & Hooch.
More storage and better picture quality. Blu-Rays when mastered correctly objectively look better than DVDs. That said, I've noticed that a lot of Blu-Ray remasters have a tendency to color correct the shit out of the original movie, so in that case the DVD might be better.