A diesel costs more to maintain, most people can't repair them themselves, and diesel fuel costs a lot.
Most LCO's I see are not pulling that much weight to need a SPC (diesel).
I started with a wrangler TJ unlimited (long wheel base) I run it with the side curtains off all season. So the extra length makes the rear of the jeep as a short PU bed.
It has a 4.0 straight 6 with a 6 spd manual. I have pulled 2,500 lbs with no problem. The jeep is rated to tow 3,500 lbs. A large and small mower and hand helds are not going to weigh more then 2,500 lbs.