I recently switched to dark theme depending on the time and I would say the reason not to use dark themes entirely is you don't get the contrasts you can get with light themes, setting the mood and I guess 'theme'.

I just find light themes disgusting looking. But that's just personal preference

It depends on content also, when reading books I tend to use light mode with brightness lowered since it makes me easier to read and relaxed?, But for other content I mostly use dark mode

Dark mode helps minimizing any eye strain, plus its cool af.

Here to agree. I use dark thème when it gets to night. Shifting automatically for sunrise and sunset, but when reading long strings of text. That’s a no-go, I have to shift into light mode for that exact same reason