Why is it that mathematicians go out into the world trying to show their own method to others, most of which are not in need of math? Can replace mathematician

Why is it that mathematicians go out into the world trying to show their own method to others, most of which are not in need of math? Can replace mathematicians with whatever, it still works. It's just basic social human nature and the conversation it stirs leads to good things that might not happen if remained unsaid.