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

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

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'.

All of the above. Plus, it's a little more aesthetic (most times), easier on my eyes since I wear glasses.

Light mode works for some things, but most of the time dark mode is the way to go.