Am I the only person that doesn't like Team Fortress 2?

I don't get it... I usually enjoy a good FPS game on PC. I have over 700 hours in Left 4 Dead 2 and I'm quite good at it; it's a brilliantly designed game... But I bought TF2 one weekend after hearing all the hype about it and I played it for about an hour... I was totally bored. It was just: shoot at people, die, respawn, repeat... Nothing but running down the same hallways. No strategy or communication. Just mindless run & gun. It was terrible. Did I miss something?