What did Michelangelo mostly paint about?
Michelangelo began as a sculptor and completed many commissions for the Pope and the Medici family. When Pope Julius II asked him to paint the Sistine Chapel it was something he could not refuse. It is well known that Michelangelo complained often to the Pope that he was not a painter but a sculptor.
Pope Julius II wanted Michelangelo to paint the ceiling. Michleangelo was certain, at first, it was an attempt to humiliate him. As the work progressed he was known to tell the Pope that he was not a painter but a sculptor. At that time in Italy one did not say no to the Pope, but if anyone came close it was Michelangelo.