Decisions....Gas or Diesel

I have pulled with 454 1 t. chevies and cummins for decades. My newest Cummins now is a 95 I bought new. I had 3-4 late 80's. Stepson has a new Cummins.
What was rule for these beast years ago has changed somewhat.
The diesel costs more to maintain, repair costs an be higher, the new Cummins has crap added on for pollution? that robs mileage and costs extra $.
Diesels are for putting on lots of hard miles, pulling a load that requires its torque. A million miles out of a Cummins is not uncommon. The truck itself will fail (fall apart) first.
I read other day Ford is coming out with a new V8 gas engine, to compete with their diesel.