Why? They don't bite, or sting. And are wonderful to look at.

Around 1980 I had them race, escorting me, while I raced through the forest on a road bicycle. At around 50 kph, them following me like on rails, maybe half a meter from my face.

Really big, maybe half or a third of that size, in many different shiny color patterns.

They were curious, but not aggressive. Was fun having them like a halo around my head :-)