Some just like to whine while others feel that the genre is losing relevance and becoming too casual (I belong in the latter group). Its been ages since I played a FPS game that I truly enjoyed. Indeed, its been a while since I even bothered finishing one at all.

 I am in the group that says fps rarely evovle in terms of gameplay, you say that rpgs are the same but thats not true at least not when it comes to how they play, they have different battle forms which makes them interesting. I have been playing fps for quite some time and most of them play the same, run shoot kill and repeat. Of course games like half life 2 and even vanquish prove that the genre can have new interesting ideas but there are few examples of that as most publishers go the easy way and copy call of duty instead of actually innovate in their games.

there are too many of them, for one. But i see the light at the end of the tunnel, at the very least it seems we are getting away from the military FPSs. Rage, Bulletstorm, Resistance, Crysis, Conduit, Darkness, Grinder, Bioshock. All are games that are coming that are not military FPSs

I wouldn't go as far as the word 'hate', but I 'dislike' the sheer popularity the FPS genre has developed as of late and the effects it has had.  This stems from the fact that the genre is not to my taste (bioshock and timesplitters are the exceptions), but is predominately due to how many fellow gamers among my peers (U.K 16-18 year old typically male 6th formers) are not only shocked but actually look down on me and my gaming taste once they find out that I don't play CoD or Battlefield, despite being an avid gamer.  It's like some kind of inverted snobbery

What you didn't start on Wolfenstein 3d?  Tis a shame.....  Also, you failed to mention Duke Nukem 3d which was king of FPS for awhile back then (I prefered it over Doom).  Also, Duke Nukem 3d evolved FPS a lot.  All those gadgets he had back in the day added a ton to gameplay.  For instance, the holo Duke.... When I was playing on my 14.4 or 28k modem back in day against my friend in Duke Nukem we would trick each other like crazy with that gadget.  Put one in the elevator on our favorite level (Red Light District) and then you could hear them shooting at it before they came up the elevator.  Also, put some pipe bombs hidden in the elevator (to the side) and then when they get in and you hear the elevator going up explode them.  This was the "hidden room" in the porn store which had a window you could look out to the street.

ok they have different battle forms but they won't get hundreds of new forms in the future so they don't evolve as well. you have round based battles, you have battles like in oblivion or 3rd person view battles like in da but what do you expect in the future?

its funny because if you change a shooter its not a shooter anymore so how should they change the gameplay? if you give the player more ways to play and more things to do they will call it rpg (like fallout 3)

the question is why is there so much hate because there isnt so much hate agains sport games or racing games and they cant change as well. they cant let you do other things in a football game then playing football and everyone knows that but in fps everyone is complainig about it that you just run and shoot. yeah its a shooter why should you do other things? and if you can do more than that no one calls it fps anymore. its just a big joke! put more in a shooter and you say rpg to it and dont put more in and you guys say fps dont evolve lol

^this post it exactly how I feel. Damed if you do and damed if you don't. 

Wrpg do not evolve that much but Jrpgs do evolve and only on my ds I have played plenty and each quite different than the next you just have to see The World Ends With You and youll see something truly special. You are right in the fact that its quite difficult to change how a shooter plays which is why the hate for the genre as it arguably the most popular genre but without real merits to gain that position as it cant evolve or chooses not to. It has become the easy way for many developers that in search for a form of gameplay they choose shooting because its always the same and it sells. The sports and racing games are not popular so they get a free pass but they have also become stagnant. I do not hate the genre itself, Halo was one heck of a good game and I am currently playing goldeneye on my wii but in the end its more of the same and I think developers can change that but they wont. I dont mean they have to change the shooting aspect of the game, but bringing other ideas to the table.

Because their favorite genres are not as  popular as they once were....

To me personally hack and slash is as about as samey as they come, each to their own. I think to like FPS is like a taboo, if you do like you're some dumbass player sort of thing. I personally like FPS, I wouldn't say it's my favourite genre but it rates highly in my books.