I would certainly prefer a government that doesn't spend money on horrific things at all. It'd be great if I could pay my taxes without feeling dirty. I'm hopeful that maybe, with a lot of hard work and creativity, we'll manage to fix our democracy.
But in the meantime, I don't think there's anything morally wrong about legally reducing taxes and sending the money to charity instead. I'd even argue that, since privilege is an issue, we should expand this opportunity beyond the privileged few.
I'm criticising the system more than the individual. That being said, I've noticed that people will rail against big brother and all these rules and yet turn around and take advantage of any flaw in the system because they can (everyone else is doing it!). Proving that we need hyper-specific and cumbersome rules because no one is capable of policing themselves.
But in the meantime, I don't think there's anything morally wrong about legally reducing taxes and sending the money to charity instead. I'd even argue that, since privilege is an issue, we should expand this opportunity beyond the privileged few.