In this thread Samuel J. Greear asks:
What has drawn you to use the DragonFly BSD operating system and/or participate in its development by following this list? Technical features, methodologies, something about the community? I suspect the HAMMER filesystem to be the popular choice, but what other features affect or do you see affecting your day to day life as an administrator, developer, or [insert use case here], now or in the future?
Since I do not follow the mailing list I will answer here: Well it is of BSD origin! The real reason I used DragonFlyBSD years ago, was that we needed to run pf on the machine and DragonFly was the only BSD that installed on it (with some tweaks though). So simple. It also felt a lot like FreeBSD-4 (for some inexplicable reason, I was never really happy with FreeBSD-5, never installed version 6, returning to using it on production systems in versions 7 and 8). Plus, I got to submit a (minor) bug report :)
I really miss not running DragonFly these days.