I'm sorry you're upset about this, but expressing your dismay with me, who is a user just like you on this user to user ONLY forum is pointless.
Tell Apple how you feel --> Feedback - iPhone - Apple
I don't have any scratches on my phone. I put a screen protector on my phone before it was ever turned on. As I've done with every iPhone I've owned, except iPhone 6, which I unfortunately didn't do. And that phone in one year got all sorts of scratches. I learned my lesson with that. Only I didn't blame Apple, I blamed myself because I understand glass is glass and glass can be scratched.
BTW, your tire analogy doesn't work. You may be upset your phone has some cosmetic scratches, but it in no way renders your phone unusable inside or outside. Tires which couldn't be used outside would not be fit for use. A phone with cosmetic scratches works perfectly fine as it should. Pretty big difference.
Perhaps you'd prefer this analogy if you want a car analogy...........Not buying car insurance because you've never had an accident is akin to not putting a screen protector on a new phone because you've never scratched a phone's screen before.