I obviously don't endorse this, but in the US you absolutely can ignore it forever as long as it isn't student loan debt. Anything else large enough to sue for can be discharged through bankruptcy (which is comically simple in some states), and debts below that[1] will fall off your report after 7 years.
Your credit will tank for a bit, of course, but otherwise there are no real consequences.
1. I think FICO even has a minimum amount for negative items and doesn't consider medical debt at all, but don't quote me on that.
At any rate, I'm just pointing out that it's a thing you can do, not advocating it as one you should do.
As an aside, I think a lot of the HN audience would be surprised at just how many people in America do take advantage of this. Being constantly broke really changes your decision making paradigm.
I'm not sure why it's so controversial to point this out, but c'est la vie.
Coïncidentally (and anecdotally), I was recently proximate to a situation where a new hire had their offer cancelled on account of their credit report. It became clear they had a habit of entering into and defaulting on small contracts. Nothing obscene. But enough that, as a financial services firm, the employer found it to be an unacceptable risk. If that person were sued in any capacity, that fact pattern would come to light and illuminate them in a negative light.
I do think everyone should be given the chance to contextualize and explain things, though; going through a rough patch and defaulting on a couple of credit cards is different from habitually refusing to pay legitimate bills, for example, and absent some other negative indicator shouldn't be disqualifying.
If someone owes me money in the US, I don't have any means to send a legal request?
I Germany, I can just go to court without needing a lawyer and the court will eventually send a bailiff if my claim is justified.
Once it's on the credit report it can then be disputed.
Good luck getting a court to uphold a contract where the terms weren't clearly understood by both parties.