I'd recommend people poke around on Discourse before dismissing it out of hand. After using it for a while, the Infinite Scroll seems to have been more well thought out that previous ones. It does remember exactly where you were last time, as well as update your URL for direct linking to a post. It also allows for replying to a post as a new topic, which is interesting.
I think the thing that keeps me interested in Discourse is just how much all the other free forums are pretty much just versions of Simple Machines, give or take features. I also am gonna have to disregard any aesthetic complaints considering most forum software is pretty damned ugly and this one only looks the way it does because of the tireless efforts of the 'Bage.
There's still stuff that's missing, of course. At the end of the day, the state of open source forum software seems to be pretty dismal. So it doesn't look like there's going to be some great magic bullet. I'm at least in favor of getting rid of the pretty old Simple Machines that does not seem to be doing what we want anymore.