I used to use OpenBSD on my daily laptop about 8 years ago. Loved it. Worked for a University and we had a few OpenBSD Servers in my department for web serving, email, etc. No other departments did.

Why did I stop? Theo was such an ass about questions on "his" mailing lists that, well, there were friendlier communities out there.

OpenSSH, however, I use a lot so I could donate a few bucks for that.