Star Wars is about black and white, good and evil, while Star Trek shows you the good and bad in many philosophies and lets you decide what you think on your own.
Star Wars is wonderful morality tale about good and evil, but it is very basic. The Jedi are good and selfless, while the Sith are bad and selfish.
"“Fear is the path to the dark side. Fear leads to anger. Anger leads to hate. Hate leads to suffering.” – Yoda"
While good vs. evil is a fun story, it doesn’t actually have much substance to it. Star Trek approaches philosophy in a very different way; whether it’s the logic of Spock, the devotion of Kirk, or the prime directive both the positive and negative aspects of these philosophies are presented in Star Trek.
Star Wars gives you a wonderful Shakespearean drama, Star Trek gives you something to think about.
Next: 4 Star Trek is nerdier than Star Wars