Frieza: I don't torture kids, but they are filthy monkeys after all.
Vegeta: What did we ever do!?
Kakarot: Lord Frieza, why are you doing this!?
Frieza: You did nothing more than be Saiyans. And I'm doing this because with no Saiyans left there's no possibility of reproducing, to make half Saiyans. There will be no Super Saiyan.