Five Building Blocks To Create An “Age 100” Retirement Portfolio

With more and more Americans living longer: 1. What are the key requirements or strategies to cover in building retirement portfolios that aim to cover expenses until the retiree lives to 100? 2. What are the key steps advisors and retirees can take to build an “age 100” portfolio and why? 3. Is it even realistic to build a retirement portfolio geared to 100 years of life? Why or why not? All comments are welcome. I am a freelancer.