There's no reason for the state to become involved. The state didn't become involved in 1972 when my father died, nor in 2009 when my mother died.
I think it is wise to write a will and to update all the beneficiary information. I also cringe every time I hear somebody talk about putting their kids as joint owner on their assets (bank accounts, etc.).
Here are the Hawaii intestate laws:
§560:2-101 Intestate estate.
(a)
Any part of a decedent's estate not effectively disposed of by will passes by intestate succession to the decedent's heirs as prescribed in this chapter, except as modified by the decedent's will.
(b) A decedent by will may expressly exclude or limit the right of an individual or class to succeed to property of the decedent passing by intestate succession. If that individual or a member of that class survives the decedent, the share of the decedent's intestate estate to which that individual or class would have succeeded passes as if that individual or each member of that class had disclaimed the intestate share.
§560:2-102 Share of spouse or reciprocal beneficiary.
The intestate share of a decedent's surviving spouse or reciprocal beneficiary is:
(1) The entire intestate estate if: (A) No descendant or parent of the decedent survives the decedent; or (B) All of the decedent's surviving descendants are also descendants of the surviving spouse or reciprocal beneficiary and there is no other descendant of the surviving spouse or reciprocal beneficiary who survives the decedent;
(2) The first $200,000, plus three-fourths of any balance of the intestate estate, if no descendant of the decedent survives the decedent, but a parent of the decedent survives the decedent;
(3) The first $150,000, plus one-half of any balance of the intestate estate, if all of the decedent's surviving descendants are also descendants of the surviving spouse or reciprocal beneficiary and the surviving spouse or reciprocal beneficiary has one or more surviving descendants who are not descendants of the decedent; or
(4) The first $100,000, plus one-half of any balance of the intestate estate, if one or more of the decedent's surviving descendants are not descendants of the surviving spouse or reciprocal beneficiary.