You could set your browser to clear all cookies when you close it. That does mean you have to keep logging into sites every time you open the browser again, but with a password manager that’s not really a problem.

I can spend 17 minutes driving to work, or 1.5 hours catching buses. Easy choice for me.

I don’t see it that way. There are separate options to Favourite or Bookmark a post. To me Bookmarking something is so you can refer to it later, although nothing is stopping you using Favourites that way.