I hate how everybody is saying the controls are bad because they are different.
Not putting toggle crouch was a conscious design decision, and I say it works damned well with the game. Like Guerilla said, this isn't a twitch shooter. You should only be crouching when behind an object, and you shouldn't be staying there for very long. Pressing L2 and L1 at the same time is easy.
Oh, and if this game had a health bar, it would suck. I only started liking FPS when they put regenerating health in.







