Berkshire Hathaway is about to see the biggest change in its business in decades, but you shouldn't let that stop you from buying it.Earlier this year, Berkshire Hathaway (BRK.A 0.07%) (BRK.B 0.05%) made the announcement that everyone knew was coming, but nobody really wanted to hear. The company's CEO, world-famous investor Warren Buffett, is going to retire at the end of 2025. Here are three reasons you might still want to buy Berkshire stock like there's no tomorrow.1. Everyone knew what was going to hap ...