Originally Posted by
Buffalobiian
"Getting stronger" is more of an RPG thing, though there are perks and such that FPS games can let you unlock.
In the end, I think it comes down to game design though. If I made a game where you could carry 10 weapons, but also coded enemies to be stronger, smarter, more numerous and just downright invincible to the point where your ability to succeed is essentially tied to your ability to score headshots (because anything less would lead to your prompt death), you'd have other more stupid things to complain about.
See my previous comment about designers taking into account user capacity when designing the experience. Making the player into a God would make the game ridiculously easy, or make the enemies ridiculously hard to kill in order to compensate.
Instead of "I've chosen a sniper so I'll have to make sure the enemy can't get close", it's "I have to make sure I put 4 headshots into him, or 25 body shots.. or else he'll kill me". It becomes monotonous and quite boring.
Again, it's more about the experience and less about the challenge.