I love Ulysses S. Grant. I love him. I've loved and admired many presidents in the past 3 years, but not since John Adams has a president seemed so eminently huggable. As with Adams, I suspect this fondness has everything to do with the biographer. David McCullough and Jean Edward Smith put less stock in "balanced impartiality" than more academic biographers, openly taking sides with their subject in conflict and skewering their enemies.
But beyond that, USG is just so loveable. I recently loved Lincoln, but of course he is larger than life, a majestic enigma. USG is smaller than life, frequently defeated by it. He's the first president I remember being described as "tender-hearted." He has these Charlie Brown moments where he's treated horribly and he's just like awww geeeez, somebody swindled me out of all my money again. But then he presses on with his faith in humanity intact.
Did he have a drinking problem? Yes, to an extent. After the Mexican War ended he had a horrible time trying to find work. He left his family (somewhere in the Midwest) and went to California, planning to send for them when he had raised enough money. But he couldn't do it. Plan after plan failed, and partner after partner stole from him, so years passed and he was all alone. Seven years! And he missed his wife. So he started drinking, and it got him fired from his military post, and he returned to Illinois to work for his father.
Reunited with his wife and kids, and with a small but steady income, he was determined to control his drinking. (He didn't quit drinking entirely, but he rarely had more than one drink a night.) Unfortunately, rumors will be rumors, and too many people in the war department knew the reason he had "resigned." When he was commissioned in the Civil War, he was a habitually excellent commander, but his higher-ups were often reluctant to promote him because of his rep. THEN, his lamebag superior, General Halitosis Halleck, ever trying to advance his own career prospects by degrading the people around him, wrote to Washington that he was "afraid Grant might be drinking again." This had no basis, because Halleck was in St. Louis and Grant was in wilds of Tennessee or something and Halleck had no idea whether or not he was drinking, but he thought he was go ahead and WRITE SUCH A THING TO THE SECRETARY OF WAR. BECAUSE FEDERAL CORRESPONDENCE IS A GREAT PLACE FOR WILD CONJECTURE. What a butthead.
Grant managed to keep winning battle after battle, however, so no matter how the rumors swirled in Washington, Lincoln refused to demote or fire him. "I can't spare this man; he fights." (This in stark contrast to the commander of all the Eastern forces, George McClellan, who avoided battle like it was a rectal thermometer.) HISTORICAL TIP: If you want to secure your legacy, get on the good side of one of the most eloquent men of all time. There will be all these pithy, elegant compliments about you on record.