personally, I don't subscribe to the cars "all being that way". They get that way, but all of that can be prevented/ covered up by the proper sound deadening techniques.
The red 89 I had was quiet enough to carry on a spoken conversation, yet still had flowmasters, and resonators. The key is keeping fasteners and trim clips tight, and using the stuff out there made for the purpose of killing off the other noises inherant to the mechanical processes that are taking place all at the same time while the car is running.
( I.E. Dynamat)
You want to scrape off all of the sound deadening and remove the Jute backing form your carpet to save 50 lbs? then expect to hear the whirs, clicks, clunks and whines that accompany an internal cumbustion engine, hooked to a manual transmission, ending up at a live rear axle, all while having everything rattled by some noisy *** exhaust system resonating through everything else.