Let me begin by saying that I don't HATE FPS games. I'm just on the best of terms with them. But this sums up one thing that bugs me.
I will compare this to games that I enjoy...
The biggest similarity between them? Fast paced shooting, with the only sight aiming coming from snipers.
Even Doom and Deus Ex suffer from this next one. The color scheme of most shooters is pretty horrible. I mean... it's bad. There's a huge focus on browns and grays in these games anymore. It's kind of... annoying. There's not much that distinguishes the games from each other. There's not much I can detect from Call of Duty and Battlefield (From playing/screenshots). I'm talking strictly based off graphics here.
I don't know... maybe I'm being too rough on the genre, but I can't find anything to really to latch onto to like the genre. The genre seems to have stagnated ever since Destructable Enviornments were introduced. Nothing really fascinating has come since. It's almost formulaic as how the games are made. Cover based shooting is kind of irksome to me. I prefer faster paced games when it comes to shooters. Shoot fast, run fast, react fast, be careful of what little life you have. That used to be part of the challenge. Do I rush in? Do I have enough life to survive a rush? Or do I take it carefully, moving slowly? Or do I try to find health before rushing? These types of questions make you assess your skill and the situation at hand. Personally, I liked that, but eh.