User blog comment:Kaido King of the Beasts/Why Does Doflamingo Carry a Gun? - And Other Stupid Questions/@comment-10543621-20141124044913

Another related question would be, why did Robin use a gun only when she was the enemy?

Anyway, to answer these.

1: Cos he's hard-boiled

2: Cos he's Akainu

3: Cos he's Kaido

4: Cos it's a rip-off bar

5: Cos crocodiles laid eggs in the banana

6: Cos he's a swan with a human face