As you grow, and that circle/sphere grows with you I think more people become the family, it goes beyond the child and into 'fellow man' and you start to become focused on helping a greater society.
It's not an odd concept, it's a common issue many face as part of the human life cycle, particularly after one has crossed into some material success. I've seen other forums address this as a communal charitable project.
I can easily come up with worthy causes that could benefit from our collective efforts and hobby.
http://www.travelersaid.org/ and/or organizations that arrange flights or hotel arrangements for those needing medical care outside of their home locations, similar to Ronald McDonald House, etc.
We are still a relatively wealthy country where for-profit corporations can easily afford to throw off the opportunities that we here avail ourselves of....it's a gift than can keep on giving.