Warren Buffett, famous for his investment savvy and for being one of the richest men on earth, made headlines for cutting ties with his granddaughter, Nicole Buffett. This story shows that even billionaires have family drama. Don’t Miss: Can you guess how many Americans successfully retire with $1,000,000 saved?The percentage may shock you.Are you rich? Here’s what Americans think you need to be considered wealthy.Nicole is the adopted daughter of Warren’s son, Peter. When she was 4, her mother married Peter. In a 2008 Marie Claire article titled The Billionaire’s Black Sheep, Nicole shared ex…