I said 'accurate' measurement. Obviously, if someone donates $100 and they get $50 back, they really only gave away $50.
Paying taxes isn't a sign of charity, but supporting tax increases is. If a person wants to pay $3,000 more in taxes and wants public healthcare, then that person is being very charitable.
Government spending on charity is much more effective than private charities, I can't even fathom why anyone would argue against this. Public healthcare gives everyone healthcare while private charities are unable to provide these services. Don't even argue against this until you have an example of a charity getting enough donations to pay for the healthcare of an entire country.