If you hadn't made the move, no one might still notice the guy and that's why we mustn't wait for others to act when we can actually make a difference. It's a good thing that they all followed your lead and everything you mom taught you is true.
We are not meant to be a lone in this world, there are people we need their help just like there are people who need our help. What matters is playing our part and the Almighty God will always reward us abundantly.