What a Joke! You're Sending Me, a Great Demon Lord, to Save the World?

(Traditional fantasy + comedy + witty humor + passion + fantasy + cultivation + no System + weak blurb + please read the story) As a cultivator, I fear no heavenly tribulation. I wanted to live carefree, but the path of cultivation is full of twists and turns. After countless tribulations and endless years, all I ask is to have a clear conscience. I am myself. I am Fang Zuo, the bloodthirsty Demon Lord, the great villain! So what's it like to be a great villain? Obviously, you spend every day eating and drinking, and running a brothel! The world is so vast, but all I want is to raise some cattle, then lie flat and do nothing. What kind of little monster are you? They say you're useless? Come on, pull down your pants and let me see... Bah, I misspoke! I meant your aptitude. If I say you have what it takes, then you do! Here, I'll make you an immortal! What kind of little beggar are you? They say you won't live past twenty-five? Come on, tell me who said that, and I'll make sure they don't live past twenty-four! If I say you can live, then you can! Here, I'll grant you eternal life! What kind of old monk are you? They say you're great? If I say you're not great, then you're not! Here, I'll give you a stick! What kind of stinking Daoist are you? They say you're impressive? I say you're not, and you still won't believe me! Here, I'll send you flying! I haven't even done anything. How can you say I saved the world? Ridiculous! Why would a great villain like me save the world?