Speculation as to what drives Bowser to repeatedly attempt to kidnap Princess Peach and, thus, create more and more Super Mario Bros. games:
One: He wants to eat her.
Two: He wants to have sex with her.
Three: He wants to marry her.
Four: He wants some combination of the three above choices, in an order depending on how much depravity you’re willing to infer into a fairly innocent child’s game.
Five: He wants to overtake homeland — the Mushroom Kingdom, which is bucolic and pleasant — and escape his own — the Koopa Kingdom, which is riddled with lava rivers and ghosts and exists under a gloomy permanight.
Six: His offspring lacks an apparent maternal influence and he’d like to remedy this by introducing into his household the embodiment of passive femininity.
Seven: He has boundary issues resulting confusion which itself results from the fact that he routinely gets invited to various golf tournaments, tennis matches and go-kart races that Peach attends.
Eight: He’s compelled to perpetuate a gender-flipped Freudian metaphor that involves turtle shells and mushrooms serving as symbols for female and male genitals, only these symbols are each associated with the wrong gender and consequently create a great deal of psychological strife.
And nine: Housekeeping needs.