If we made this topic a FAQ, what would we talk about every other week?

FWIW, I'm a former chain waxer. I couldn't tell that it made my chains last longer, I couldn't tell that there was less friction or more drag while pedaling.

Waxing my chain left it cleaner in the week after I re-lubed it. I had to re-wax, in my environment, more frequently than with oil. After a light shower and a ride on wet roads, those two chains rusted within a few days. I persisted, and found that if I dropped everything else and re-waxed as soon as I got home, the rust did not happen as quickly on the next chains. But for me it was more trouble than it was worth.

Environment is everything, just like a man's shirt. Going to sell something to an IBM client? White or blue dress shirt, red tie, and navy blazer. Tie-dye shirts are better accepted at protest marches. Chain wax is acceptable as long as you ride in the dry, but for the rest of us, oils are better.