Of course I haven't seen WH's will. But from what I have read, and IIRC, she stated that upon her death, any children would inherit her estate, which would be held in trust, to be dispersed in certain amounts or percentages at age 21, again at age 25, and the balance at age 30. This wasn't something that the family "persuaded" BK to do, it was how the will was set up. Many people with a lot of money do that so that their children don't inherit too much at a time and that they can learn how to become at least somewhat savvy with money before they are in a position to lose the whole thing to bad investments or something along those lines. But again, I'm just re-stating what I've read and don't know for certain that's the case.
That's how DH and I are setting up our estate planning. Kids get some money at x age, a little more at y age, and the rest at z age, at which time the trustee is taken out of the picture. Our kids wouldn't inherit the last of it until age 50, however.
