Lights on or off?
I’m not sure this is a topic that requires steadfast allegiance to either side. This isn’t like regular New York style or Chicago deep dish, where you absolutely have to choose. When it comes to mood lighting for sexy time, the easiest way to go is a healthy combination of both on and off.
“That’s madness!” you might say. But bear with me.
All lights off means you aren’t actually seeing the person you’re banging (although maybe that was intentional?). But hopefully you are, in fact, attracted to your lover du jour and wouldn’t want to miss out on seeing the physical things about them that might hopefully definitely turn you on. Lights on could be a bit jarring with all aspects of your or your partner’s humanity illuminated (Bad skin? Rogue hair? Blue vein? Extra testicle?). If you can, leave the main light off but keep a smaller light -- like the hall light -- on. This allows you to get all the joys of watching your partner as you please them in the ways that only you know how, but still leaves room for a little mystery.