Goku and Vegeta in “Unfinished Business”

Vegeta, I don't understand. You've never allowed anyone to help you before in your life. Why start now? Why Babidi?

Vegeta

Because I wanted him to reawaken the evil in my heart. I wanted him to return me to the way I was before! I was the perfect warrior! Cold and ruthless! I lived by my strength alone, uninhibited by foolish emotion! But slowly...over the years...I became one of you, my quest for greatness gradually giving way to this life of mediocrity. I awoke one day to find that I had settled down, formed a family...I had even grown quite fond of them. Would you believe, I almost started to think the Earth was a nice place to live...? Do you understand now, Kakarot? That's why I needed Babidi to set me free. By releasing the evil in my heart, he has freed me of these petty attachments...and I'd have to say, it feels pretty good.

Do you really believe what you're saying?