Yes, that's true about many people ignore debts and they think credit card/loan is gift, but it is NOT.
When I received medical bill from hospital - in DC and paid $10 per month but they dissatisfied with balance so they want me to pay all at once - out of $700 but I can't. I only pay much as I could afford so they turned to collection agency over unsatisfied debt, despite about made partial payment. The collector harassed me with numerous phone calls and I decided to call at&t to change the phone number at no charge. I received a letter from them that they will take legal action to force me to pay all of medical bill at once, even with little income. I decided to put rest of medical bill on my credit card - it was bad idea because of interest rate and my aunt told me that I shouldn't pay medical bill with credit card - she told me to pay so much as I could afford and she can't believe about how hospital in DC runs, however she said pay $10 per month for medical bill is normal like many patients have done. I have no issue with medical care in my state but in DC - oh my, if you only make partial payment so will turn to collection agency.
For me, next time, if they take legal action so let them to do it, however it wouldn't anything if I have limited income - just waste of money for court.