-Record wealth inequality destroying society with populist backlash. -Asset price inflation leaving a generation of homeowners behind. -Underpriced government debt mispricing Political Risk and ultimately destroying the banking systems in Europe and Japan. -Systemic Risk.

Negative interest rates fosters an attitude that savings is pointless.

gratitude

Look at European banks. With interest rates close to 0.5% or lower, they've struggled for any profit in capital markets Effectively growing the shadow banking sector and transferring risk to less regulated parts of the system, meaning post crisis reforms don't help next time

They are a macro method of absorbing pension deficits. Look at macron struggling and you’ll see that’s applied macroeconomics not theory :-)

Negative interest rates completely mess up incentive systems that humans have had in place for millennia. Saving for your future and family is punished while borrowing for unknown risk profile time periods is incentivized. It’s psychologically backwards.

War is peace. Freedom is slavery. Ignorance is strength. Debt is income.

That we created a machine that produces consumerism & financial corruption at the expense of the producers & savers. The interest rate is one of the most important prices in an economy. Price controls don't work. Sad how times we have to learn that lesson the hard way.

Growing violence towards scapegoats. I.e. among those who will fail with unmanageably big debts might be important social institutions.

That we already had negative interest rates when you account for inflation.