Not anymore, though -- you can build an entire library of games that, in one form or another, will conquer themselves for your convenience. Want to make it to the next dungeon but can't take your eyes off the latest animal to go viral because it's an animal? Activate the self-play function, put the controller down, and let the YouTube party commence!
You can start with my current favorite source of happiness right here. You're welcome.
The New Super Mario Brothers and Donkey Kong Country Returns both have Super Guide features where, if you die enough times, the game offers to finish the level for you. Just toss your protagonists into the abyss until the game gets the point, and then you're free to run off and poop. You know those crappy parents who will gladly finish their child's homework if the tyke struggles too much? This is the same thing, only slightly less detrimental to humanity.
Don't worry about them using Luigi for the worst part of the game. He's used to it.