For many years, I was a devoted FreeBSD user. The lack of basic security hardening found on FreeBSD as compared to other systems vexed me somewhat. When the HardenedBSD project got going, I was thrilled. "Ah-ha!" I thought. "Now I can keep using my favorite OS without feeling like security is taking a back seat."

Then I found a bug (in the base FreeBSD, not Hardened-specific) that had prevented ipfw from being used on big-endian systems for several years. Years, mind you- ipfw went for years without working on big-endian systems and nobody had noticed. That was too much, and I ran for the hills.

Now, on OpenBSD, I very much miss ZFS... but that's a small price to pay in my book.