I bought a blu-ray player a couple of years ago so I could see the restored version of 2001. If that were the only movie to ever come out on blu-ray, I'd still think the purchase was worth it. :) And it plays DVDs better than my DVD player. Today they're a third of the price than when I bought mine. Even as much of a luddite as I am, I can't think of a reason not to get a blu-ray player these days.
That said, I'm sure it will be easy to make a DVD version of it.