As a relatively heavy FB user, I use the like button as a "I've read this" button for my friend's comments and statuses, and not at all otherwise.
Instead of reevaluating how our simplified models damage discourse and complex thinking, further simplifying human interaction to better fit over-simplified models only further skews us from the complex reality that our fake world obscures from us.
Ex: many journalists "favorite" tweets to refer back to later for their stories, but an uninformed observer might draw the wrong conclusions from seeing a New York Times journalist's twitter profile "favoriting" incendiary tweets by white supremacists or ISIS propaganda outlets.