The first thing out of Vegeta's mouth after hearing his planet and all the rest of the Saiyans were destroyed is "Damn, now I'll never get to be King." No sorrow or remorse for his own flesh and blood.
Makes me wish they would bring Cell back just to clown his ass for being the Prince of Nothing.
One thing this movie made me realize is that no matter how much I hate Frieza, that dude is smart. Destroying the Saiyans was probably the smartest thing he could've done and I can't really fault him for it.