Sometimes I have been thinking if it is our responsibility to keep helping others, because you can see so many people seems to rely on you as soon as you offer help to them once.
But going by this teaching, it is very good to do good to all men, by doing that also guiding your affairs with discretion. Doing good to people is our purpose in life too, because God is good and he expect us also to be good.
If we live the life of goodness, and helping one another out of any distress, we will always be victorious in life because God will always stand by us.
So, let us all learn to do good to all men.