It may be different where you are, but around here (until relatively recently), commuters bought the biggest vehicle they could afford. The traffic is packed with big crew cab pickups and SUVs with one commuter occupant and no company logo. No fighter jets or motor homes are used as commuters in my area, perhaps you live in an unusual locale. So I made a choice not to purchase a truck, and based my comparison on these parameters.

You're honestly going to pretend that the decision for you was between the jumbo SUV and the Insight? If no Insight was available you wouldn't have looked at a Mazda 3 or a Toyota Corolla? Please.

At 150k miles, I assume the SUV/Pickup is pretty much on it's last legs

Depends on the same factors (make/model/etc) that impact smaller cars. You certainly could buy a reliable SUV if that was on your list. And again... 150k could easily be the lifespan of the Insight. My brother has one and it hasn't been bulletproof.

1990 CRX-HF was not available when I bought my car.

Oh please (again). There was most certainly a reliable used small car available with a tiny engine that got an mpg significantly closer to the hybrid than to the Suburban and for a small fraction of the cost of a new Insight.

My analysis showed that I assuming an average of $4/gal, I had saved over $41K

Then your "analysis" was a con game you played on yourself to justify the expense. That's ok... it's how car salesmen have made a living for decades. You spent more than you would have on some alternatives and justififed it to yourself based on some inflated calculation of what you would save.

, gas is down now, but I don't think there are many here who would believe it to last very long at that price

It did the last time this happened.