Regenerating health is just an alternative to leaving health packs around.
If it bothers you that your health regenerates, it should also probably bother you that your character is able to instantly reverse the effects of bullets by finding gauze and antiseptics laying around.
If you want to get really realistic - along the realm of sci-fi - lets talk about invasive surgical nanites. It's be interesting to play a game and see a bloody bullet pop out of your forearm and land the ground, as your skin reseals itself.
If it bothers you that your health regenerates, it should also probably bother you that your character is able to instantly reverse the effects of bullets by finding gauze and antiseptics laying around.
If you want to get really realistic - along the realm of sci-fi - lets talk about invasive surgical nanites. It's be interesting to play a game and see a bloody bullet pop out of your forearm and land the ground, as your skin reseals itself.