I'm sure that all of you realize what you're saying here in this thread, and I really tend to agree strongly with you, but there quite are a number of others who don't seem to. I'd state the obvious this way:
If you want to get into this hobby, and be satisfied with it in the long run, it would be best if you are, or aspire to be, a tinkerer at heart. From day one.
Taking apart your brand new purchase, no matter what it is, is not the first thing that comes to mind for most people -- except maybe us model railroaders. Others generally call the need to "fix" a brand new purchase a case of exceedingly poor quality and complain to high heaven about it.
I recall many years ago, about 60 now, my Dad's neighbor bought a brand-new Oldsmobile, and to make sure that he'd never have to buy another car, ever, he took it apart to 1.) check and retighten every fastener and 2.) lubricate all mating sliding and rotating parts. This process took at least 9 months, in his garage, a little work every night, before he declared it fit for the road and began driving it.
It apparently worked. He drove that car until the day he died, and that was about 35 years afterward.
Are you, or would you like to be if you could, a tinkerer? Or perhaps a hands-off operator instead?
Mike