In Dragon Ball, why did Wukong marry Kiki when he grew up, instead of Bulma?

All for more sequels. First of all, Wukong and Kiki are not human beings. Tianxintang and Lan Qi both have super powers. Only Boom and Leping are ordinary people. Secondly, Boom looked for the Dragon Ball to find Prince Charming, and Leping only saw Boom's body after stealing the Dragon Ball. In the first ending, the dragon comes back to life and surrenders to the Great Devil. Boom and Leping got married, Wukong and Qiqi rode a somersault cloud, and the ending was ok. In the last episode, Wukong gets married in a hurry, and Master Roshi's sister divines. Moreover, Booma's voice actor once said that he preferred the plot before Space, because the fighting behind it was basically nothing to ordinary people. The second movie is about all kinds of aliens, so I think it's called Alien Wars. Change the ending of the first movie!