Originally posted by Adam Grimes
Should I point out all the times Goku put the planet(s) in danger just because he wanted a good fight?
Let's name all of his fights.
He fought Vegeta on Earth and really didn't have a choice in the matter since Vegeta and Nappa was killing his friends.
Fought the Androids on Earth because their Primary goal was to kill him and dominate the world. He didn't have a choice here either.
Fought Cell and made Cell make a tournament (instead of outright blowing up earth). He didn't have a choice here either. Either fight Cell or watch Earth blow up.
Fought Fat Buu but did not kill him because he wanted to make room for his kids to be the hero since he was dead.
I'm not seeing where Goku threatened the Earth. What I'm seeing is him saving the Earth. Hell, he sacrificed his life twice to save the planet. Once with Raditz and the other time with Cell. He gave up his life to save Earth.
Goku is the greatest hero and he meets all of the qualifications of wielding Mjlonir (even though he doesn't need it).
Also, to help Vegeta with his pride, he even powered down and lost to Majin Vegeta (when he could've easily went Super Saiyan 3) so that Vegeta could feel proud of himself for matching Goku.