Two thoughts I had reading the OP's post.
#1: My exhaust is loud enough that I don't really hear all the creaks and rattles anymore; though maybe that's a combination of me going deaf from said exhaust and approaching 40 faster than I'm comfortable with.
#2: If it didn't squeak, rattle, and make other noises that would cause immediate concern for your safety in other cars, I'd be pretty worried that something was really wrong with the car
Drives a Prius (clearly knows nothing about cars).
Lots Of Trouble Usually Serious
Leave Out The Unnecessary Stuff