Personally, the two most alluring things about RTX for me is a) better global illumination, none of that silly "you can see sunrise shining through the mountain

Personally, the two most alluring things about RTX for me is a) better global illumination, none of that silly "you can see sunrise shining through the mountain/cave's ceiling" stuff; b) better local illumination: a glowing object should be an actual light source and make its surroundings brighter, dammit. Everything else, including insanely accurate shadows and reflections, weird lenses/out-of-focus effects, etc. is much lower on my list.