Have you made plans for passing on ... your domain wealth?
Not just the wealth, but the control. You go belly up and none of your heirs has the passwords to your accounts, it's probably going to be a nightmare to straighten out.
And for a lot of people, dealing with domain names is probably going to be way down on the priority list after the owner's death. By the time they get around to dealing with them, some may have expired and been snapped up by someone else.
For us- no kids, so no need to worry. :) All our domains are owned by our corp.