With your philosophy, you get games with pointless difficulty systems like Skyrim & co. Sliders that range from "enemies die in one hit" to "you'll spend half an hour hitting this boss before it dies because now it has hitpoints defined by your_level * 9999999999". None of the bosses in Souls games take half an hour to fight unless you do something exotic like SL1 runs, if you're not done with a boss in a couple of minutes chances are something's wrong with your build, because otherwise your skills are good, else you wouldn't survive for 2 minutes with a Souls boss.