User blog comment:The Will of Deez/The Curious Case of Donquixote Doflamingo/@comment-2226235-20150816030218

I think a lot of the difference between Doflamingo and Rosinante comes from age. Doflamingo was pretty young when he essentially went from having everything and being worshipped as a god to having nothing and being hated by everyone. That kind of shift would be traumatic for an adult, but Doflamingo looked really young in those flashbacks. That wouldn't have had as much of an influence on Rosinante since he was even younger and wouldn't have as much memory of growing up in Mariejois and wouldn't have been as traumatized by the sudden change in status and environment.