What business is it of the Almighty Federal Government that you donate to charities, let alone how much and to which charities?
Legitimate charities serve a public good and in many cases deliver services which would otherwise need to be provided by government. The charities reduce government spending and save more money than they “cost” in unrealized revenue.
Are you one of those who think that government is entitled to 100% certain portion of assets and income and that any adjustiment is a “tax expenditure?”
If so better get under the bedsheets with William Byrd.