I love both :( I think I enjoy the characters of Star Wars more (Leia <3 ) but I think that perhaps I enjoy the optimism and hope for the future that Star Trek has. So in the end, I'd probably choose Star Trek.
Although I appreciate both, I like starwars better but they're not the same genre. Star wars is best described as "science fantasy" because of the supernatural element and star trek is science fiction. It takes place in what would be the future of earth.
However star trek is more mature and requires you to think and take notice of things more.