FreeBSD probably isn't useful to you every day. Maybe some of your net traffic will go through a FreeBSD box, but that box could be replaced by just about anything really. However, I'm not trying to say that FreeBSD is useless or irrelevant - what I want to say is that FreeBSD has some excellent out-of-band uses.
I think people should consider the value of the educational, developmental, experimental and competitive opportunities that FreeBSD provides. We need projects and communities which have low hanging fruit for beginners and we need projects that are ready to give different approaches to problems a go - so that the rest of us on whatever OS can learn from it regardless of the success of the implementation.
The same goes for my favourite alternative OS - Haiku which also contains some bits and pieces from FreeBSD for networking/wireless IIRC. (BTW, it has package management now and a lot of improvements to the native browser, and more.)