User blog comment:TheDoctor230/Flash Season Final Theory (Spoilers)/@comment-27106328-20160511113513/@comment-27700324-20160511211251

He wants to rule with the other Metas to have the family that he never had, that is why you see flashbacks to his past when Catlin doesn't want to be with him. It shows us that he doesn't want to be lonely a second time.