Yes I have. If you aren't bothered, it means you haven't opened sheets containing enough calculations. EarlyRetirementNow (a blog) has a large and comprehensive

Yes I have. If you aren't bothered, it means you haven't opened sheets containing enough calculations. EarlyRetirementNow (a blog) has a large and comprehensive retirement Google sheet that runs a series of simulations with historical returns of many asset classes (equities, bonds, gold, etc) over more than a century of data, while allowing you to specify custom cash flows and withdrawal rates and whatnot. You definitely feel not just the sluggishness of the UI but also the calculations themselves. The sheet: https://docs.google.com/spreadsheets/d/1QGrMm6XSGWBVLI8I_DOAeJV5whoCnSdmaR8toQB2Jz8/copy https://docs.google.com/spreadsheets/d/1QGrMm6XSGWBVLI8I_DOA...? A video tutorial to use the sheet: https://www.youtube.com/watch?v=CClhsaBbTm0 https://www.youtube.com/watch?v=CClhsaBbTm0