sorry but my iPhone 5 with chipping disagrees. 5S with loose home button after button disagree. iPhone 6 with the camera moving disagree. 6+ with touch disease. 6S with battery shutting at 20%.
now my 7+ with it cracking and popping when using 3D touch.
QA at apple is awful. I agree they use good parts, but the quality is awful now.
You don't have to apologize. You obviously have had a poor streak of iPhones, which would frustrate me too. But on the contrary, I can tell you from my experience, I have not had a defective iPhone and I have had every iPhone. Clearly your experience will vary. Your opinion matters, but it's not a known or proven fact that Apple's quality has dwindled to being awful. Not coming from a company that sells millions of iPhones annually. But Apple or any manufacturer is not perfect. I feel there standards are a higher standard than that of others.