It has been many years since I used NetBSD as a daily driver, but it was (and I trust it stills is) an incredible operating system.

That said, there is a major drawback in a modern context. A lot of modern software assumes a mainstream Linux system. While the ports collection will handle the patches and dependencies, much of the lean, cohesive, and traditional feel of NetBSD disappears as soon as you start pulling in those applications (e.g. an up-to-date web browser). Users of mainstream Linux distributions will also find that there are a lot of skills to relearn with respect to system management, or at least recall from earlier days.