I'm on my third gasser.
Gas Pros:
Initial cost (new) for a van with a gas engine is at least $4,000 less than a diesel.
Pump price of gasoline is generally less.
No DEF and other failed emission junk.
Engine life about the same.
Lighter weight.
Cheaper to maintain.
Easy cold start.
No need for fuel additives.
Quieter.
Gas Cons:
Reduced fuel mileage.
Doesn't sound manly.