This is hacker news. Why would anyone here ever take time off of work? If you're still employed (and who is?) by some BigCorp you can at least have side projects in your off time. But most of the people here are founding one or more startups while managing a productized consultancy and can probably scale their billable time to something like 22.5 hours per day (assuming 90 minutes of sleep time distributed via the Uberman schedule). So this isn't a fair argument against soylent for most people in software/tech jobs, and probably soon most other jobs as the contractor model becomes more popular and jobs become uberified.