While I agree, it's not as common sense as you might think. In many games, when people are fighting some hard enemy, and they get an opening where they can cho

While I agree, it's not as common sense as you might think. In many games, when people are fighting some hard enemy, and they get an opening where they can choose to either (1) heal themselves so they can survive, or (2) deal a bit of damage with a cool combo, nine times out of ten they'll choose greed (option 2). They give more priority to greeding than to surviving, so they're not even trying to keep their own health above zero. And you (probably) can't deal damage your enemy if your own health is zero. As obvious as this sounds, their priorities are usually backwards. It's more noticeable in souls-like games, but it happens in many other games as well.