The Myth of Unfair Paychecks

So Alice gets married and devotes her life to caring for her husband and children. Bob has no time for such things and devotes his life to his work. When Alice's children are young she stays home to be there for them. When they get older she limits herself to part time work. Bob works 60 hour weeks as he claws his way to the top of the corporate world. Alice lives out her old age surrounded by family who have fond memories of all their time together, who remember her as a devoted wife and mother and love her for it. Bob dies a lonely old man. And now someone thinks its unfair that Bob has more money than Alice does? Hasn't Alice enjoyed the far greater reward? Surely she can be gracious and let Bob have his bank account.