What aspects throughout history that have been implemented in games you think unnecessary, ruining, or any other negative thing?

Why have certain game aspects been implemented? Examples: hitpoints, amount of lives.

Example: in a game, if you shoot a bullet from a gun into a person's head or unprotected torso, should this person not perish at once (or be severely wounded and incapacitated)? Why, in some games, old and new, the necessity to hit the target more often for his hitpoints to attenuate?

I am questioning why the development of games has gone in certain directions and I am almost certain you can think of more such issues besides hitpoints and abundance of lives.