Because it's proven infallible offroad despite the inherent crappiness of driving around on three cylinders, crap tires, and a hole in the exhaust.
And I can stare at it, think to myself "I love this turd" and then proceed to beat the crap out of it.
Oh, and I can fix it... it's probably a little harder on an XJ, but I still can fix it! Gotta love tools too!