I too love 'em both. Star Wars a little more than Star Trek but it's like choosing between space apples & space oranges.
I remember the day I 1st saw Star Wars like my parents remember the day JFK was killed. There ain't nothin' in the world like the memory of watching that flick in a first-run theatre on opening weekend. At the time, Star Trek was just reruns you watched after school while waiting for Batman reruns to come on. Kinda cool, but cheesy. Then Star Wars happened.
It literally changed the world in a week. There's no words I know that can describe it. It was the first of it's kind & I was lucky enough to be there while it happened. My memories are segregated into things that happened before the summer of '77 & things that happened after.
Star Trek wasn't worth squat till Khan, & even then, I mostly liked it just because it had Mr. Roarke from Fantasy Island coppin' 'tude.