Speculation. Why We Can't Have An Attraction System

traits and zodiac for chemistry/compatibility, Appearance for attraction.

You don't need to know if someone likes Camping to find this person attractive. If you like black hair, blue eyes, and fit body type, then the people who have that are the ones you find most attractive. that neither means they find you attractive nor that you fit together as persons.
If one of you loves camping and the other can't stand being near tall grass, that doesn't really go together.