lender is responsible for checking how much the borrower can take. My bank reasonably doesn't give me a billion. Default likelihood exists because there is an interest that prices it. When default happens, shame on the borrower and shame on the lender for having been a bad checker or just shame on no one if that default was one of the "expected" and covered by all the debt+interest already cashed in.
An any case increasing suicide-rate and child mortality-rate is not the right answer, unless you are called "mafia" or "IMF".