I don't like fast food hamburgers. In fact, I am not a big burger fan in the slightest. If I'm going to have cow I want a steak. However, my boyfriend has once told me, "I could eat a burger for every meal." So the first time I ever had In-N-Out was when I first started dating him. He was simply amazed that I had never had one and that he had to fix that.
Nonetheless, I was not impressed the first time we went. And technically still not "impressed." Their burgers are good. If they were a movie I would give them a solid one thumb up. I keep going because the burgers are good. Cheaper than a burger at a sit down restaurant, more convenient and better than the average fast food chain.
I foresee many more trips.