User blog comment:JustSomeDude.../761- Let's talk about Chapter 595!/@comment-1595565-20140920031945

To answer your last question, to put it simply, he's a control freak. His power complements his personality perfectly in that manner. He needs to have a hand in everything. As for telling off the government official, I harken back to Dold's flashback to the night Doflamingo threw his little party on the island. He mentioned Doflamingo attacking a tax/treasure ship run by the world nobles, which is how he got his shichibukai status. That, coupled with the secret he took after becoming a fallen dragon, tells me the government is really interested in his activities. So they put him on a leash and gave him some perks. They didn't give him the spot because they thought he'd be useful in their times of need, but rather to keep him from his high profile criminal activities and did so as a last resort. Doflamingo complied, liking the benefits, and because that was something else he could hold over the government's head.