If Nintendo gave people fines for playing off a USB they would have millions more dollars to spare. All it does it break your warranty for the Wii since you need to mod your wii. Think about everyone that hacks in public matches with redbox and what not. All those people have modded wiis but use them for bad reasons. They're are many good reasons to mod a wii.

And yes blops finished off my wii but I have 1,500+ hours on black ops on my wii now.

Metroid other M was and Super Smash Bros. Brawl.  If your disc drive went out while playing those Nintendo would fix it for free.  They replace it with a better drive too.  Don't worry about Wii U.  They learned their lesson.