I haven't really made up my mind about Basic Income, but one thing I never heard advocates of Basic Income talk about is that incentives matter to human behavior. BI will tax people who work more and give handouts to those who don't. This disincentivizes working and incentivizes not working. For example, the increasing numbers of people on Social Security Disability Insurance seems like a similar phenomenon and is no…
Chart 3 shows quite some growth since 1980, but the per year increase is not exactly astronomical (and the page mentions that there are trends not accounted for in the data, such as the aging of the baby boomers).
It's also reasonable to expect a contingent benefit to have more impact on the incentive than an uncontingent benefit.