Your only option... move.
But look out where you go. Many states do have an income tax AND sales tax. You're good in that you've prevented the income tax to this point. I applaude you.
Efforts are underway to eliminate income taxes in several states, not to mention the big move to eliminate federal income tax in favor of a national sales tax.
The Tenn scenario is a partial example of what happens when pols have to raise sales tax cuz there's no income tax with which to tinker.
When ALL Tennessee residents feel the hit equally, ALL Tennessee residents oppose more taxes. The pols don't like that - is it any surprise?
Regardless - be praised for your efforts to prevent your state from implementing the income tax!