Interest is simply an aspect of what the real problem is, i.e. the paradigm of Debt as in cost burden ONLY, and the doomed to fail “necessity” to continuously create it (debt)  as the only way to keep the economy from spiraling down into recession or worse. Hence the necessity to create the paradigm of monetary gifting in sufficient abundance to invert the reality of A + B into the new free flowing (not just statistical) reality of A + A.