What better technology do you have in mind? HTML? Because as much as I like it, I find myself converting HTML to PDF every now and then so I can annotate, paginate, and yes, print it. PDF isn't perfect, but the art of typesetting is informed by much more than the physical properties of paper. Reducing communication to a static artifact divided into page-sized chunks is a useful feature for scholarly writing. Being able to produce physical copies of a document that you can give away for free, even if most people will read the document on an electronic device requiring a power source, is a feature. Writing static content that really takes advantage of the web's unique features [1] is hard!