Yellowjackets Flying

I watch the yellowjackets fly
‘Neath overhanging eaves,
Remaining just the briefest time
Before each buzzer leaves.

They’ve obviously built a nest - 
You’d know that at a glance -
And there they’ll wait to sting someone
As soon as there’s a chance.

In Nature, there’s a reason for
Each creature to exist.
If stinging insects got the boot, though,
They would not be missed.