I think what people are basically saying is "know the critter" befor you buy one.
Is there a mule club in your area? That would be a good group to talk to and I bet they would be happy to familiarize you with the pros and cons. Plus they probably have mules for sale...or maybe even a lease. Just a thought.
I don't know how old you are but personally I am past the age of learning from the school of hard knocks. I want to know what I am getting in to.
If you ever find yourself in a fair fight, it's because your tactics suck. ~ Marine 1SGT J. Reifinger