There's a Firefox extension named OneTab, it aggregates all your open tabs into a single page, closing every tab except the OneTab. I have mine pinned. That, or Ctrl+Shift+D in Firefox to bookmark all tabs. I tend to have 10+ tabs open myself but the thought of that many tabs gives me the heebie-jeebies.

Yes, it's easy to ignore open tabs too. No system is perfect but I do this to increase the chance of me reading or watching whatever it is. I wouldn't let it go to 3000 so it sort of works for me, better than bookmarks anyway!