I still use the old style of Reddit, which is text-dense and doesn't have giant header images like some tabloid side bar. You have to set it in your settings or go to old.reddit.com to see this old style.
I think if they ever got rid of it, THAT would cause an exodus of a not-insignificant number of people.
Facebook and Twitter were a part of my daily life until they weren't, like Friendster and Slashdot.