Scrooge is a grumpy, selfish old man who hates Christmas because it's a time of giving, joy, and generosity. He believes that people only give gifts to show off their wealth, and he's bitter and resentful that he can't afford to give extravagant presents like the rich. He also despises the fact that people expect him to be kind and generous at Christmas, which goes against his miserly nature. So, he chooses to spend the holiday alone and miserable, ignoring the festivities around him.