The best help to offer family is to put yourself in a better financial position, don't struggle to help family, struggle to put yourself in a better financial position then take away your from dependency.
As for investing I agree that it increases our chances of getting rich, but I can't understand what you are saying, what does not having to work hard to help the family and ignoring the family make us rich? I think helping our family will not make us poor. If we can help our family then we help according to our ability, right?.
If we ignore our family in my opinion it gives the impression that we are someone who is better than our other families. In my opinion people who are calculating with their own biological family will not be able to establish connections or communicate with other people because it is clear that this is selfish and selfish.
If we have a succes business, how can a colleague or business partner look good on us if we just ignore our family?.