How come nobody asks the really important questions, the questions that will easily, almost invariably, determine a couple’s compatibility, based on the formula that if the boy likes a, the perfect girl for him prefers b:
Does she/he a)like going to the country for the summer, or would s/he prefer b)to stay in the city?
Does s/he like to a)sleep with the window open or b)closed (a/c on or off)?
Would he like a)to eat noodles and cheese for every meal? Does she like b)to cook a different 6 course meal every weeknight and have fleishiks every other night?
Does she like have 47 different salads on the Shabbos table, while he is a vegetarian–he loves vegetable too much to eat them?
It’s not that opposites attract, it’s more Hashem’s way of balancing people out (IMHO).