I can appreciate that perspective, I am, or was a mechanic ..... recently retired .... and am not a wealthy man. Fact is, I'm selling my BUick Ttype race car and my Harley V rod to pay for my Dually. And, I had a 2016 RAM eco DIESEL ... great truck, but traded it in at about 35,000 because I was afraid of having issues. What I saw in my shop over the years was issues with hemi's cam and lifters, always seemed to happen just after warrantees expired. Not a cheap repair either. But I did trade that ECO diesel in for a new 2019 Charger Scat Pack ..... love that car. It's a Hemi! Now I've owned 2 Cummins duallys, never had any issues, to speak of. Look at the warrantee on the Cummins... it's pretty substantial .. My fuel mileage has always been great with the diesel too. The power goes without saying.
Bottom line, wish you happy travels with your Gasser ...