Well.. you could use firefox maff extension to save webpages locally (and your local could be in the cloud, or on a remote backup). MAFF are just zipped html/css/js/img.
MAFF is a single-file format that contains one or more web pages.
* Save disk space, since MAFF is based on ZIP
* Include video and audio, WebM, Vorbis, Theora and more
* Be universal, compatible with Linux and other platforms
* Use an open format, with no risk of vendor lock-inHowever, I disagree with your premise. Sturgeon's Law applies here: 90% of everything is crud. I can barely remember any of the websites I visited today, let alone any reason why I would want to revisit them.