I still use two gas tractors every day to feed cattle. Was using 3,but I just bought that diesel FWA loader tractor. Gas is cheaper than diesel and if you're just using them around the yard doing chores,what's the big deal? Nothing runs free. I've got another gas tractor in the shed that I use in the spring on the fertilizer wagon,all summer on the hay rake and haul wagons with it in the fall. I don't see any reason to replace it.
I've got a diesel pickup that I've had for 22 years. I don't know that I'm gonna replace it with another diesel. Not worth the inconvience anymore to have to go farther to get diesel when it costs more anyway.