Masons are just people joined together in brotherhood that tries to do good in the world- period.
Why are you so obsessed with needing to know what they do? If you want to know, join. How does a 32* make a difference in your life? Answer - It doesn't.
According to @T. MIKE SMITH Masons are just people trying to do good in the world, but according to @Dorkus we have to join before we know what they do? I can't be the only one who sees the absurdity of having to join something before knowing what it is. Is that like passing the bill before you know what's in it?
If it's simply an organization that "tries to do good", why so much secrecy? I've asked that twice already and still haven't had anyone answer.