Good point. In retrospect there was nothing exceptional about their misunderstanding of their own minds. I do, however, disagree with an unconditional condemnation of suicide due to the possibility of of a positive singularity. Just because we can't see the future doesn't mean we can't make a judgment under uncertainty. Some probability of a fate worse than death must cancel a sufficiently low probability of whatever good experiences are possible. Also, if a sufficiently large amount of money is necessary to prolong someone's life, perhaps that money could be better spent on improving the chance of a positive singularity for everyone, depending on the exact results of the expected utility calculation.