It is said that 99.4% of Buffett's wealth was earned after the age of 50, and 95% of his wealth was earned after the age of 60. This is not just motivational talk; it is not telling you that "you can still achieve great things at an old age."
This actually illustrates the severe impact of inflation. The money he earned when he was young has all been diluted, reduced to nothing. He is 94 years old this year, having earned 95% of his money in the last 34 years, while he earned only 5% in the previous 60 years. This aligns with the same order of magnitude as the depreciation of the dollar over the past nearly 30 years (which is even somewhat better than the situation with the Chinese yuan).