great cost/benefit analysis on when to sign up for cryonics, plus associated topics, by @niplavyushtun
links to this article about the "hostile wife" phenomenon, which I was not previously aware of. one of the stated reasons for such hostility is that cryonics is a selfish act, as it redirects family resources for individual gain
https://www.biostasis.com/is-that-what-love-is-the-hostile-wife-phenomenon-in-cryonics/
if one was to deprive their children of their inheritance for the sake of cryonics, that would indeed be unethical IMO; it violates the spirit of the family arrangement, wherein one expands their notion of the self to encompass the family unit.
hence, diverting family resources for individual cryopreservation can only be said to be ethical when adequate arrangements have already been made for the surviving spouse and children; how to determine if the arrangements are adequate, however, is a highly subjective matter