For the sake of his family and friends, Vegeta decides to commit suicide by using the Final Explosion in order to kill Majin Buu. ... Trunks and Goten try to convince him to let them help him, but Vegeta tells them that Majin Buu is too strong for them.

How did Vegeta self destruct?

Majin Vegeta uses a Self Destruction technique on Majin Buu, the Final Explosion. ... The Final Explosion does not cause the user's body to explode; Vegeta's body merely turned to stone and crumbled to dust afterwards. Super Buu uses a Self Destruction techique on Gohan, the Revenge Death Bomber.

Did Vegeta sacrifice himself for nothing?

After fighting with Majin Buu, Vegeta realizes he isn't fighting for just himself, but for the entire planet, and commits the ultimate sacrifice. After fighting with Majin Buu, Vegeta realizes he isn't fighting for just himself, but for the entire planet, and commits the ultimate sacrifice.