bbPress is simply the best forum software, if someone wants an easy to use and to understand, not bloated and performant forum. I'm using bbPress for more than two years now (it is a small german artist's board), and it rocks great. My own usage is the reason why I'm doing a german translation of bbPress.
To this great software slowly dying hurts. There are alternatives (and I checked out some of them), but nothing that simple, elegant and fine. The point of stagnation, the for months unfixed minor bugs, the lasting headless state of the bbPress project is death. That bbPress is still in use for the WP support forum does not give me and does not give anyone else out there a consolation.
If ever an important, leading developer will leave the WordPress project, how many days the project will remain headless? Not that many days, I think -- everything would be done to make sure that WordPress is a software which is still worked on. That's the difference between a living and a dead project. And the next severe security problem of bbPress (there is no software without bugs, and there are millions of subjects exploiting bugs) will be noted as COD on the death certificate. But the real COD is the current indifference.