It seems quite clear that Apple’s focus on making existing features work better across its platforms is an investment that benefits us all. I’ve been impressed at how the OS seems so much speedier in use. I’ve encountered very few bugs - some third-party apps were a little unstable at the beginning of the test period, but it has been a long time since I encountered anything particularly egregious.
I have been using it on my Mac for all my work. I’ve been lucky enough to have used Mojave for months. It’s fast and mostly familiar - you should be flying through your tasks within a few minutes of installation.
Apple’s macOS 10.14 Mojave is available now, and after months of using it, I think most Mac users should upgrade if they can.