As long as the general public will pay back those loans. We don't want another Junk Bond scenario which took place less than a decade ago. People are stupid though so who knows...
Junk bond scenario? I think you're confusing terms.
Are you referring to the mortgage crisis or the credit crisis? Consumers are drastically misinformed on financial management, it's an epidemic. It needs to be corrected at the grade school level and in homes. Parents need to teach their kids about responsible use of money and credit.
Those credit crises did involve buyer/consumer lack of education and lack of responsibility. However the trigger that put those poor buying decisions at risk was a corrupt mortgage and investment banking market. There's no evidence that the Fed is involved in some corruption related to keeping rates low...there's literally nothing they could gain from it!