I was in the same position as you, not too long ago. I kept reverting back to my familiar light themes.

Switching to The Dark Side finally stuck after using it for a few weeks straight. Now I can't imagine going back. When I switch to an app without a dark mode, it's like staring at the sun.

I don't have any issues with dark mode. I feel like my eyes are more relaxed not having to contend with so much incoming light.