I am not the first to point this out; but some readers may not have heard it: the first recorded Limerick is found in the prayer attributed to S Thomas Aquinas in thanksgiving after Celebrating and Communicating.
Sit vitiorum meorum evacuatio,
Concupiscentiae et libidinis exterminatio,
Caritatis et patientiae,
Humilitatis et obedientiae,
Omniumque virtutum augmentatio.
This must surely prove that there is something inherently satisfying about these structured rhythms.
I bet nobody could render that into an elegant English Limerick.