Akira Toriyama’s Dragon Ball quickly established a compelling competitive rivalry between Goku and Vegeta that carries on to this day. These two Saiyans are constantly on the quest to become stronger and are used to copying each other's Super Saiyan milestones. Goku and Vegeta have plenty in common when it comes to Saiyan strength, but they’re also both husbands and fathers, an idea Dragon Ball has explored in unique ways.
Source：https://www.cbr.com/dbz-vegeta-really-better-dad-goku-debate/
