Every decade, I’ve marked my birthday with something unforgettable. At 30, I woke up in London, had champagne in a pub, and made it to a party in Versailles by dinner. At 40, I threw a rooftop bash with a live band in Manila. At 50, I lunched with friends on Victoria Peak in Hong Kong and hiked down through a tropical forest. At 60, my honey and I floated over Moldova’s capital in a hot air...