I greatly enjoy discussing aspects of human life that are not linked to the natural sciences, for example with my philosophy teacher from secondary school. I would like to continue in research after my dissertation, and perhaps study philosophy as a sideline. Then again, I may start a family. I don't know yet which of these paths I'll choose. But I don't think it's possible to have both, children and a career as a scientist.
Children simply take up too much time.
Besides, I don't consider that simply raising a family is not challenging enough. A family also allows one to grow and develop. And not everything in research is exciting - a lot of it is just routine.