I live in a part of the world where a lack of financial resources is death. Every single day I pass by people begging for money and for work, and I live 5min away from my office. My crappy little second hand Fiat is worth more than combined net worth of every person I pass on the street. I remember seeing a documentary once where a labourer said something to the effect of: "I work like a horse so that my children can work like dogs, so that their children can live like people, and their children can be free."
And before any says your children should take care of themselves: try telling that to a child born with severe autism or down's syndrome, or some other disabling birth defect. If you're not planning for your family so that you can enjoy your younger years a bit more fully, you're taking a huge, selfish risk.
I'm much more fortunate than that guy was - my parents worked like dogs.