What enormous fun it must be to be Warren Buffett, the acclaimed American investor, billionaire, and philanthropist. The ‘Oracle of Omaha’ has spent his whole life doing what he loves, while amassing a $131.7bn personal fortune. Buffett turns 94 on 30 August, but is remarkably spry for his age. However, his right-hand man Charlie Munger’s death at age 99 in November 2023 must have shaken Warren. ‘Uncle Warren’ started investing aged 11 in 1942, investing his savings into three shares of a long-gone US business. And 82 years on, he has lost none of his sparkling enthusiasm for capitalism. Today, Warren Buffett is chairman and CEO of Berkshire Hathaway, which he and Munger grew into an $861bn conglomerate. (Disclosure: my wife and I own Berkshire B stock.) Buffett has also donated over $50bn to good causes and intends to donate 99% of his entire wealth during his lifetime or on death. Hence, Buffett is one of my personal heroes, along with physicists Richard Feynman and Stephen Hawking, mathematicians Johann Carl Friedrich Gauss and Srinivasa Ramanujan, and computer scientist Alan Turing. Right now, Warren has a big — but welcome — problem. Berkshire Hathaway is so massively profitable, it sits on...