Mac OS X and OpenBSD are my daily drivers, but at their core, they are BSDs, and less and less I find myself using the NeXTSTEP portion of Mac OS X and more and more time in BSD-land, which is leading me to move more and more of my overall computer time to OpenBSD which is a great operating system but is still largely a continuation of the UNIX/POSIX/BSD model which I appreciate like fine wine but do not love.
If Fuschia ends up being the answer to the question of what would happen if we built a new operating system from scratch today, taking the best lessons we were able to learn in the past 50 years, then I might be using it as my daily driver in 10 years.
Or maybe not. Nobody can really say what it will be right now.
(HN won’t let me directly reply to the comment below so here it is:
Nothing in zircon doesn’t already exist on Linux or any other modern kernel. Additionally it has bloat, like 3 distinct IPC mechanisms.
Even further, if it ends up being any technical person’s main driving OS it will surely sport a POSIX API and at that point it’s just another implementation of POSIX with similar a security model.)
Obviously, it has to be more with all of the aspects of it, but in its current state, that's the only thing I can envision.