Megachurches rake in millions like corporations with giant properties, so tax them fully like everyone else.
Megachurches fund massive safety nets, from rehabs to food banks, that governments can't afford. Wiping out their tax concessions just punishes the people relying on them.
Taxes are the lifeblood of the state; concessions to the wealthy spark trouble and drain the treasury. Tax them fully, so Rome stays strong and the people stay safe.
Tax concessions keep the powerful untouched; I side with full taxation to fund the people, not privilege.