sure having overpowered weapons while duel weilding them (tyvm Goldeneye) is all good times.But it does tend to make things a little too easy for my tastes. Personaly my weapon of choice is the pistol/magnum/revolver, not some BFG that destroys everything (tho fun).The pistol makes me feel like a cowboy or some BAMF who uses pistols to solve all his problems(maby I watched too many movies. Also I get to laugh at people,when I kill them with it. Sure I could blow everything all to hell(tyvm gernades), But pulling off a head shot with the pistol is all I need to get my kicks.
Also carrieing more then 4 diffent weapons make thing complicated or boring.I see most fps like it's part of a game of rock,paper,scissors,but when you have all three then is no reason to play,no gamble.Also having multiple guns means you got more things to shoot with (duur no shit retard),so the whole conserve some of those bullets slips your mind.
realism makes it intense, and intensity is half of what fps's are. The other half is the fucking explosions,rapid fire and awsome loud effects.