To add to this, you are also expected to withdraw more year after year along with inflation. If your safe withdrawal rate allows you to withdraw $40,000 on year one, you can withdraw $40,800 the second year (assuming 2% inflation). Dispite this increase, your portfolio should still grow. If you are withdrawing all of your gains, you are setting yourself up for failure.
To add to this, you are also expected to withdraw more year after year along with inflation. If your safe withdrawal rate allows you to withdraw $40,000 on year one, you can withdraw $40,800 the second year (assuming 2% inflation). Dispite this increase, your portfolio should still grow. If you are withdrawing all of your gains, you are setting yourself up for failure.