Lots of people just don’t have the brainpower to be comfortable with abstract physical or mathematical concepts. Nearly everyone can understand a love story.
Isn't part of the point of Romeo and Juliet that it's not a love story? Romeo and Juliet thought they were in love but they really were hormonal teens who knew each other for only two days. My understanding is that's the purpose of Romeo's initial infatuation with Rosaline; it shows that he's really just someone in love with the idea of being in love.