Couples often make wills in substantially similar terms.
This case suggests that such wills might well be reconsidered. If unchanged, such wills may just create obligations as between the partners which are neither wanted nor expected. After the first death, the surviving partner may have many years to live, and have to cope with unanticipated and substantial changes. He or she may re-marry, which will revoke the existing will, or the situation can change in any number of ways. In any event, the survivor will usually need to be free to alter his or her own will, and to deal with his or her property according to circumstances.