On my work computer, my theme preference follows my mood:
When I'm feeling happy and engaged, dark mode is great. But when I'm feeling down (often in the dark days of January or February), I get a decent lift out of switching back to light mode and adding as much color to the app themes as I can.
While - “back in the day”, which is to say in the early 2000s - I made a fair number of websites with dark or near-black backgrounds in order to be “edgy”, I never liked dark mode for a computer or device as a whole.
Even my office reflects this: my walls are painted with the whitest white of paint I can find outside of a surgical bay, and 4×4,000 lumen corn lights @6,000K are installed in the ceiling fan. For reference, this is the equivalent of 10×100W light bulbs.
When I'm feeling happy and engaged, dark mode is great. But when I'm feeling down (often in the dark days of January or February), I get a decent lift out of switching back to light mode and adding as much color to the app themes as I can.