I guess the reason that you feel that your family is more important, is because they are contributing for the good of the society (more than them). And in the end that's what makes life meaningful.
But the fact that some people are capable to afford to build unlimited wealth, allows them to take wealth from society, sometimes without even noticing.
And, if you see that life is getting harder and harder to live (people are losing their access to quality basic services and goods because they are getting poorer) wouldn't you want to assure that your family will always get enough to have a comfortable and secure life? So if you know that you have the power in your hands, wouldn't you protect yours?
That's why we need a government that gives the real society, those ones who contributes, all the access to what they NEED to live with freedom, security to have access to a home, food, water, energy, ...
So a government that takes the power from money and give the power to people's contribution.