There are many reasons George Washington should be celebrated today, but probably the most important: he refused to be king.
From the History.com website:
On the morning of March 15, 1783, General George Washington makes a surprise appearance at an assembly of army officers at Newburgh, New York, to calm the growing frustration and distrust they had been openly expressing towards Congress in the previous few weeks. Angry with Congress for failing to honor its promise to pay them and for its failure to settle accounts for repayment of food and clothing, officers began circulating an anonymous letter condemning Congress and calling for a revolt.
When word of the letter and its call for an unsanctioned meeting of officers reached him, Washington issued a general order forbidding any unsanctioned meetings and called for a general assembly of officers for March 15. At the meeting, Washington began his speech to the officers by saying, “Gentlemen: By an anonymous summons, an attempt has been made to convene you together; how inconsistent with the rules of propriety! How unmilitary! And how subversive of all order and discipline…”Read the rest. (It's well worth it.)
More than one politician would do well to contemplate that.