That's a pretty simplistic and elitist view of the diesel vs. gas engine choice. There's a lot more nuance here, and if you need or want to tow heavy trailer loads around there's little doubt that diesel is the way to go. The difference in torque is huge in the chart that @Botamon posted, not to mention where the peak torque is in the rpm range.
I won't be parting with my '02 F-250 7.3L diesel. It's a good truck, and a great truck if used within it's intended operating parameters.
and that 7.3 diesel is gutless compared to the newer ones. I'm about done with mine. Gutless, costs $200 to change oil every so often, it's old and things are breaking. I have to put injectors and cups in it sooner or later and that's another big expense. I won't replace it with another diesel for sure. Go drive one of the new gas burners. They pull a LOT better than these old 7.3 diesels do. Trust me, I have driven them and I'm actually impressed with them.
Only reason I bought mine was because it was there, it was low mileage, and the price was right (even trade, well almost). I couldn't not buy it. I didn't want it but I couldn't not do it. Wanted the 6.8 gas. I had driven those and they are impressive too. at the time my boss had the exact same truck I do (2003 F250 CCSB 7.3 4x4 lariat) which we used for pulling tractors around (deliveries) so I was familiar with it. Dad had a 95 PSD at the same time as well. He even said the same things. I should have never bought that diesel; and later on he got rid of it for a gas burner.