As far as I can tell, traditions serve two functions: to create a familiar bond between a community of people, and to foster a comfort zone that people can always steadfastly rely upon. Even hate-filled traditions can serve these functions if it enhances positive relationships with people. Neo-nazis have hateful beliefs but they certainly like one another, based on principle. So the beliefs serve a function, traditionally speaking.
In my own family, my siblings and I broke with many traditions because we did not find them compatible with the way the world does and should operate at present. Others we continue to adhere to because they have positive values.
I dunno... use your brain and critical thinking. If you're blindly following a tradition then you might be doing something harmful out of ignorance.