This is that one "3 stages of a real mf, struggle, grind, shine" meme turned into a game. At the beginning everyone thinks you're just a dumb kid at best, a pest at worst, but then you start busting your ass to make tons of money, buying expensive stuff, giving your mom a mansion, donating to renovate the shanty town, and suddenly everyone loves you (especially the girls).
The only reason not to play it is if you don't like mystery dungeon/roguelike (with metaprogression) gameplay.