I agree with your second statement, but I have spent most of my 20s and a great portion of my 30s with crazy negative stuff on my credit report. I flatly refuse to pay outrageous collection fees, and there are at least three items on my credit report which are outright lies. For example, switching from Verizon to T-Mobile, and T-Mobile handed out gift Mastercards to pay the early termination fees for getting out of your Verizon contract. well, Verizon refused to accept my $350 gift Mastercard, so I mailed it to them certified mail. They received it. I have the receipt. But now I have a $400 item on my credit report that I refuse to pay. An administrative mistake the Army made, and now there's another $900 item on my credit report that I refuse to pay because it's a clerical error. That last one's interesting, because I have signed witness statements from a finance guy involved in making the mistake, yet they refuse to clear it, so I refuse to pay it.
Despite this, I have been able to get a car loan, I got a VA loan for a house, I have opened two credit cards (which I use responsibly) since then, and also was able to get a personal loan for an emergency six years ago. It is absolutely possible to do "normal" things. It's just been a matter of explaining the situation.