When you're playing through a game, you seldom focus on healing. On needing to heal, sure - as desperately backstepping in order to try and get just enough time to restore your failing health and get back into the fray without dying is an integral part of the vast majority of video games.
But medkits and bandages are never anywhere near as interesting as whatever else is going on, and so healing animations and restorative items fall into the background very quickly. This is helped by the fact that most healing items aren't exactly very interesting, as the same potions and mysterious ointments tend to appear time and time again, and quite fairly. Nobody is playing Dark Souls for the Estus Flask, after all.
But the fact we're almost trained to ignore the healing system in games aside from using it means it's very easy to overlook just how wild it is in many games. When you're not rubbing a sandwich on your face in the hopes this will save you, you're actively stabbing yourself in the arm to heal, or sitting around waiting for milk to rot into yoghurt so you can chug it for a health boost.
Things like this almost make it worth taking damage, if only so you can sit in shocked silence at how bizarre the process of restoring your health can often be.