The idea of a "debt jubilee" is definitely something that's been discussed before by economists and philosophers.
One big issue is that there are other people on the other side of those debt cancellations that would get hurt.
For example, it's terrible that young adults have massive college loans to pay back. Some are kicking around the idea to forgive those loans. But there are also creditors as well. Think of grandparents who have a 401k for retirement. Through the interconnectedness of the financial system, a component of their retirement income will depend on payback of those "bad" college loans.
Will those senior citizens happily vote for a debt reset if they know their retirement savings get reduced? Seems doubtful.
The way to sell the idea of debt forgiveness is to convince the creditors that it's impossible for the debtors to pay them back. Therefore, take a financial hit now instead of later so the economy can get moving.