(1) Any person eighteen years or older shall be considered of full legal age and may contract for or with respect to insurance. Any person seventeen years or younger shall be considered a minor for purposes of Title 48 RCW.

(2) A minor not less than fifteen years of age as at nearest birthday may, notwithstanding such minority, contract for life or disability insurance on his or her own life or body, for his or her own benefit or for the benefit of his or her father, mother, spouse, child, brother, sister, or grandparent, and may exercise all rights and powers with respect to or under the contract as though of full legal age, and may surrender his or her interest therein and give a valid discharge for any benefit accruing or money payable thereunder. The minor shall not, by reason of his minority, be entitled to rescind, avoid, or repudiate the contract, or any exercise of a right or privilege thereunder, except, that such minor, not otherwise emancipated, shall not be bound by any unperformed agreement to pay, by promissory note or otherwise any premium on any such insurance contract.