>if you can afford it, the upside is potentially far more beneficial than the downside

I looked into this in some detail a while ago, and I recall Alcor indicated that many of its members opt for life insurance (with Alcor as a beneficiary) to cover the cost of cryopreservation. That's something like $75K to cryopreserve your head, and $150K for whole-body cryospreservation.

I suspect the mean age of HN readers skews toward late 20s or early 30s, meaning that they'd likely pay something like <$100 every year for $150K of life insurance. Also many of us have some form of life insurance paid for by our employers.

I updated my will last year with the help of a SF bay area attorney who told me she's done cryopreservation wills/trusts for a bunch of high-profile tech execs (she did not, of course, name names). Email me if you want her info.