Why sigmund freud give so much importance to sex and aggression?

Sigmund Freud believed that sex and aggression were fundamental drives that influenced human behavior. He viewed them as key components of the unconscious mind and believed that understanding these drives was essential for psychoanalytic therapy and understanding human motivation. Freud's emphasis on sex and aggression stemmed from his psychosexual theory, which posited that early experiences and conflicts related to these drives shaped personality development.