Regenerating health is a cheap gimmick to expand the target audience to include casual gamers, it doesn't actually improve gameplay at all and in most applications it actually detracts from gameplay because it takes away a lot of the peril and risk/reward aspects of play. But like I said, its not there because its good, its just there to suck in more casuals.
The most realistic game I played with regards damage (also one of my favourite FPS of all time btw) was rainbow six 3. You got hit chances are you were dead, unless you were wearing the heavy armour with the full ceramic plates and helmet, then you might survive a few low to medium calibre hits to the chest or you might not. If you were hit and did live then unless you were wearing the heavy armour and were very lucky, then you would no longer be able to run, your walk speed would be reduced to a sort of limp and your aim would be seriously crap.
I loved that game.
The most realistic game I played with regards damage (also one of my favourite FPS of all time btw) was rainbow six 3. You got hit chances are you were dead, unless you were wearing the heavy armour with the full ceramic plates and helmet, then you might survive a few low to medium calibre hits to the chest or you might not. If you were hit and did live then unless you were wearing the heavy armour and were very lucky, then you would no longer be able to run, your walk speed would be reduced to a sort of limp and your aim would be seriously crap.
I loved that game.