I run OpenBSD with a desktop on an iMac G4, mainly as a hobby machine to continuously loop through and display photo slideshows. But I take your point about its real role.

Oddly enough, I switched from NetBSD as when its iMac support for X was broken for several months, and I haven't switched back. (For the uninitiated, it's NetBSD that is supposed to be the one that runs on anything.)

I really like having it around to do things like experiment with pf, and test C development in a non-Linux environment. Especially for C for one who is used to Linux, it's a bit of fresh air on OpenBSD.

I also have a few VPSs around, including one with FreeBSD. I wish more of them offered the BSDs.