In order for people to be truly free, government has to be limited to absolute essential work that only government can do in a free society; Courts, Police, Military, Diplomacy, etc..
The idea isn't to fund the government so it can do what it "needs" to do, it is to strip it down to its necessary core functions only and let people actually take care of their own affairs and those of their community voluntarily, rather than being forced to pay at the point of a gun.
The less government, the less cost and the less money wasted to inefficiencies and corruption.
If the government is having to hold fund raisers and is basically begging for money from the people, you know you are doing it correctly.