i used to use it a lot
it doesnt' have much going for it, in the scheme of modern unix-like operating systems.. it's a bit of an underdog. it doesn't have fancy high-performance schedulers, its io layer is slow.. it's missing drivers for lots of commodity hardware, some of them because of principles.. theo is an asshole sometimes, with his constant 'im always right and you're always an idiot' thing.. but..
for one, the documentation is beautiful. whoever maintains the documentation should get a medal. there are few typos, everything has a man page, and every man page has EXAMPLES and is easy to understand. better than any other operating system out there. and that's a big plus: if you try any linux distribution and find an unfamilar file in
because their entire mission is based on thorough auditing, they make sure their code is very well documented and easy to understand. that's a big bonus too. modifying and developing on openbsd, as a platform, is a very nice experience
openssh is a very beautifully written piece of software. it's nice to use, and it's nice to read the source code. when is the last time it gave you any problems? openbsd is an entire operating system written with the same standards.
give it a try if you haven't, it wont hurt you.. virtual machines don't cost anything..