Lets not throw the baby out with the bathwater now. My mission profile is 420NM across TX. 9 hours driving. 3+45 @ 110KTAS with a piper warrior II. No commercial direct flight, the closest airport would be KSAT and no direct flights to my destination from there either. Driving time to KSAT from my door 3+00. So 45 minutes after I get to KSAT driving to get on a TSA conga line for another hour to board two different airplanes to cover a total of 420NM, I'm at my destination on the piper.
My fixed prop 4 banger beats driving and airlines by 4 hours or more. Not even close my man. There are profiles suited for these airplanes. As to why Cessna didn't make the 172 a 48 usable gallon aircraft like piper did I have no idea. I can make that flight non-stop with more than 1+45 reserves.
I do agree though, that capability is NOT worth 300AMUs. Neither is an updated trim, new style seats and an LCD screen.