I want to know how individual people come to be. What combination of genes, environment, culture, and interactions between those things create the person I am and the person you are? How does environment affect genes? How do brains work? How do we go from one small cell to complex creatures capable of philosophy, art, and love?
There are so many ways to learn about people, from literature to sociology to biophysics. I do it primarily by studying gene regulation, meaning learning how one master blueprint, our DNA, is able to create all our different cells to create life.