The problem with just bookmarking is link rot, I've had a few links 404 or the domain disappear - instead I use wallabag (imperfect but good enough) to pull in the content for another day
That's nice, I generally like setups like this that capture content and give me control over things (I've seen something similar on HN with passively saving any papers in PDF format viewed in the browser and then building fulltext search on top if, or e.g. approaches like this: https://github.com/thesephist/monocle).
That being said, in the spirit of my comment — I honestly don't care too much about what I might be missing due to sites going down etc. anymore. The truly great stuff I save somewhere offline, but that's one or two levels past all the random things I currently use bookmarks for.
I just discovered SingleFile, a plugin for Firefox which does an epic job at creating an offline copy of the webpage in a single HTML. I'll sync my repo across all my devices for offline/forever access to them.
That being said, in the spirit of my comment — I honestly don't care too much about what I might be missing due to sites going down etc. anymore. The truly great stuff I save somewhere offline, but that's one or two levels past all the random things I currently use bookmarks for.