Allow me to explain the game.
"Hey, I can make that jump/My light went out, guess I go in the dark."
*Falls and hits three ledges to the head, landing on the floor (if you're lucky) and denting the floor*
You are now bleeding and have little to no muscle health.
You now have an infection.
You try to slow it down by using the light sources, it doesn't really work.
You now have sepsis.
You're now too weak to make jumps.
You sit there, slowly dying, for ten minutes.
You're dead.