Scott...... forget about the guy dying. THAT ain't what Bob's talking about. A WILL takes care of the dying part.
This is about how THE COUPLE'S assets will be divided in case of a divorce. The Client figures he owes a portion of his business to a long time friend.
He wants the friend's portion to be free and clear and not subject to any argument between the COUPLE in the event of a divorce.
And if either party has sizable assets at the time of a marriage, a Pre Nup makes for a better marriage.