I am applying to top research schools, which obviously value research. Although research is one of the main reasons I want to be a doctor, I'm having trouble making it fit in my PS because my PS is mostly about listening and compassion, things that are not really related to research. My whole app is extremely science-heavy so I don't think they'll doubt my commitment or interest in science, but is it strange to not say anything about why you like research or that you even want to do it?