This is analogous to saying, I can tell you Lisp is no good because I used it for a couple of years and was glad to stop. The radial arm saw doesn't get enough love for two reasons: poorly-made department-store versions that don't keep their settings, and ill-informed people who never learned how to maintain and use one properly. The original DeWalt saws and the Northfield saws are amazing machine tools, beautifully made, safe when used properly, tremendously powerful and versatile. owwm.org and the Mr. Sawdust book are great resources.