It seems (from diegocaleiro's description) that no one he asked had actually performed a cost-benefit analysis, even a flawed or half-hearted one. The question of the what this sort of behavior implies is an entirely separate one from that of whether cell freezing is a useful practice.

Would you describe my comment as a cost-benefit analysis? I mean, I know what cognitive algorithms I executed before typing it up to the limit of my introspection, but I don't know if diegocaleiro would look at that and say "oh, he's rationalizing" or "oh, he didn't think that this was a promising technology but had considered it before / hadn't thought of it because of that."