I may get flamed for saying this, but my immediate family has had too many American cars fall apart or suffer "early junking" due to build problems and bad quality control. I read what you guys are saying, and perhaps quality of American brands has had a quantum jump in the last 5 years or so, but I can't get my own personal observations and experience out of my thinking.
This is a trust thing. Every American made car I have owned or used since my college days has been disposable. The idea was that, with rare exceptions, you just didn't keep the car - you bought it new or off lease and drove it only for 3 or 4 years and then sold it.
The "Ford flagship" 1986 Taurus I bought at full list had lots of weird problems and very poor quality, and the dealer was a total lying shithead who made me walk on EVERY problem. My dad's 1994 Lumina self destructed within 2 years after he sold it to my brother in 1998. My wife's 1996 Stratus had a blown head gasket at 30K miles.
I have a 90 Camry with 240K miles on it, doesn't use oil, a/c still works good, rusted out in places but a real workhorse. To Codger, yes, the throttle body carbon buildup is a PITA, big deal, it's a $40 cleaning every 20K miles. But the car itself has been a reliable performer and dirt cheap when you factor maintenance and repair costs against the miles on it. I REALLY doubt that I would still be keeping a 1990 American brand vehicle...
Today if I needed to buy a new or near new vehicle, I would try to not follow my biases and use consumer reports and reviews to help evaluate the choices.