I can appreciate this desire. Printing my website is basically out of the question at this point. I rely upon people thinking it worthwhile to keep a copy, and I make it fairly easy for people to do so. I distribute on a number of networks, I offer a number of snapshot archives (e.g.
https://web.archive.org/web/*/philosopher.life), and I make it easy to download a complete copy of the entire site (
https://philosopher.life/#Readme), as it's just a single html file. I do ask family and friends to see it as a book they will keep in their libraries, and I keep it very small, almost pure text (I don't want it to be any further a burden than it already is). Some store it on a thumbdrive or even keep it as an e-mail attachment. And, that it is nearly pure text is something that I think is exceptionally useful for this problem, as even if there aren't browsers that will be able to render it (that would be sad), there may be tools that can at least read the source (and, in a way, the site is meant to be somewhat readable from source, though it requires some motivation). I also enjoy the knowledge that there are random copies out there sitting on hard drives. I think it's gonna take some luck too.