Why are so many MCs in this genre arrogant/condescending pricks?

Basically title... basically the standard archetype MC will dive headfirst into some suicidal situation fully believing they will pull through, while at the same time handling everyone around them with kid gloves, "Don't worry I will save you... this is too scary for you to be here though, so run away, and be sure to tell them Johny Axe was the one that saved the day!". Its not just combat either, its every social interaction, and at this point I'm not sure if its a meme, or if everyone who writes this genre just secretly wishes they could get away with being an arrogant ass hole...