I can't name a scenario in which decreased tax revenue for the government is a bad thing. the claim that government spending is better than private rests on the idea that the money in aggregate can be directed more efficiently. the support for this is...nothing. I tend to think extraordinary claims require extraordinary proof. so if you make an extraordinary claim: I need to take your money for your own good, you need extraordinary proof.

the burden of proof does not rest with me, my position is that in the absence of strong evidence you should leave people alone.