Copying from a reply to another comment:
I picked OpenBSD over other non-Linuxes because of its focus on security. Also I think the pufferfish is cute. It wasn’t that deep of a decision for that particular laptop. I do find it quite an enjoyable OS to use, and I have anecdotally had fewer problems with it than with Linuxes, I suspect because their whole security focus also means fewer bugs.
If you're interested in it, just try it out in a VM.

