"Philosophy is BS"

I was in the cafe today and this guy asked me my major. I told him I double major in Philosophy and FPA with a concentration in theatre, and he asked me why? I told him because I like the idea of rationally investigating the truths of being,knowledge or conduct. He told me I was a bullshitter and that philosophy was bs and not needed in everyday life. I thought back to one of our previous classes that we had discussed evolution in. I've spoken about this in more than one class and it baffled me that this kid could be so oblivious to what he was saying about philosophy.I asked him what do you know about biology or the human body? He told me that human beings went thoroughly the process of evolution. I asked him did he believe that? He told me yes. I laugh at him and ask do you know that evolution is a theory? It isn't actually facts but it cannot be disregarded. You learned about that in school and you believe it. So how can philosophy be bs? I didn't get a response.