And that is especially so when the other reasons could be linked to children. As you stated, emotions can far out weigh any financial analysis.There are other reasons to want a person dead beyond the financial...
But.... for balance, at the end of the day, the victim was worth considerably more alive than dead. Then factor in the re-marriage and a rewarding, yet demanding career. I suspect his payments were not only large, but also made on time and drama free. This could reduce the potential for strong emotions from the ex.