The days of getting overly excited about an OS release have passed for me. Maybe I'm just getting old and cranky or maybe operating systems reached "good enough" status a while ago. But either way, it's not something I get worked up for.
But I'll cop to being curious to try out Mojave's dark mode. I browse Ars with our in-house dark mode (you'll find it in the upper-right three-bar hamburger menu if you haven't tried it yourself yet), I use night mode on Twitter, and I find myself more comfortable with darker interfaces these days.
I upgraded to Mojave on my iMac yesterday and found the installer had already pre-selected the dark option for me, presumably because I ran the dark menu bar on High Sierra. Seemed like a good sign.
Unfortunately, I have to say I don't love it. And the reason is pretty simple: it's not actually dark enough. Apple seemed hesitant to really commit to the idea, and we ended up with a lot of fairly light grays and not nearly enough contrast. When I want dark I want closer to black, and I want my icons to feel crisp and well-defined, not sink into their background color.