Are you sick? Are you hurt/injured? Are you tired? Do you have any bruises/scratches? A scar, maybe? Are you almost near-death? What about your cholesterol and sugar levels on your blood? Well, don't worry. That's why save points (save spots) exist. To keep you healthy and alive (for a veeeerrry long time) without needing doctors, medicines (do they even exist in this universe?) or even physical exercises practices and heal all kinds of illness, infection, fatal attacks or disorders. But, try to live near one, or else...well, who knows what could happen?

That doesnt apply to Kh, but to every game with Save points

That doesnt apply to Kh, but to every game with Save points

TRUE...

Funny how the manga is a lot more realistic when it comes to that. They actually get bruises, tear up their clothes, bathe, and have to eat,  just like normal people.

If you honestly want complete realism in a game you're asking for your character to die after on fatal whack and the games over forever, or you want a hospital simulator game.  Also why would you need doctors when you can learn Cure.  

A more realistic KH would really suck though. Stuff like falling damage, burns from fire damage, permadeath, etc. Can't say any of those would improve the franchise.