my analysis of human conversation goes somewhat like this:
people bond over superficial similarities.
the simple act of person A making a statement and person B agreeing upon that statement (i love that song! - me too!) leads to a positive first impression for both A and B and thus serves as a common ground for a potential future relationship of any kind on which more about the other person can be explored. now, the more original and unusual the statement, the greater the appreciation and positive response if person B agrees on that statement, but also the lower the probability of person B agreeing upon that statement in the first place. the more information A has about B, the better A might be able to judge whether B would be on the same side, which leads to people being more open and revealing more unusual preferences once they know each other better. if the information A has about B equals zero (which is the case in putting up a profile on a dating site), the most frequent strategy to attract a potential person B is to make a very general statement which the majority of people will agree on or like. also, some people seem to be fully satisfied with completely banal similarities, traits and hobbies as long as they experience kindness and/or attraction, while other people will only proceed to actual friendship or love when they connect and share interests and beliefs on a very deep level.
so that is what i think is up with that. anyone else who doesnt like nazis and sh***y weather?