Aubri, I agree with you. The Humanistic movement evolved from the Greek Classical and allowed artist and society to broaden their subject matter. They were no longer bound to nobility and the gods and goddesses but could begin expressing the values and images of individuals.
I think it is the struggle and trials and tribulations that make us human. To depict these events in art captures them as accurate representations for future generations. The one struggle I have with this progression is the fact that gods and goddesses still appear in various scenes. This might be the regressive portion of the Hellenistic movement.