Despite all its "missing" features, that's a simple system that stays in your head easily. The OOBE is to me the best of all BSDs, even though NetBSD improved a lot these last few years in that regard.

Most of their re-implementation of already existing software is more pragmatic, and straight to the point. There is a reason why so many OpenBSD tools end up in "portable" versions for other OSes 🙂 That makes it very likeable.