The worst part is if you pay that mortgage off, in most states, you're still paying property taxes for things you don't benefit from. Though they claim it helps your property value. What if you want to live in that home for the rest of your life? Why would you care about property value? And, why would people want to buy a home with higher taxes?
Yet, if you don't pay the tax, they evict you from the home you paid off the mortgage on.