I don't happen to agree with you on this issue, but generally I appreciate your, shall we say, highly developed sense of skepticism.
Actually, I don't. The handles don't break (well that's not true, they do that as well), it is usually the mechanism inside the door (window regulators, etc) that go and those can run well over $150 to replace not too mention labor because my own mechanical skills are sorely lacking. Likewise the expense and incovenience of dealing with an old fasioned standard lock which won't actually let you into the car.