Description: Describes the challenges of using replacement ratios for retirement planning and suggests alternative approaches including spending strategies such as the 4% rule or divide your age by 20 (Feel Free spending) rule. Identifies and prioritizes different types of spending needs including sustenance, lifestyle, health care and bequest. In addition the article provides data showing how spending typically drops as retirees age and discusses how to take this into account when planning when to retire or how much to spend in retirement.