Perhaps the most important reason societies began to form is due to the fact that human cooperation could create an exponentially compounding benefit whereas isolated groups of people or hermits could hardly do anything and were mostly stagnant by comparison. If the purpose of society is to provide as much benefit for it's members as possible, then the most active way of accomplishing that is if societies members cooperatively use the fruits of society to fund and install welfare institutions that ensure society and it's members are in the most ideal condition possible. What is the point of society if it can't be used as a feedback mechanism for perpetual benefit?
Personal/Direct Welfare
Education:
If everyone could freely receive an education, there would be no barriers for people to get a good education to get a high quality job in the first place. It hardly makes sense that Societies require people to get an education, and then create a money blockade that prevents people from receiving the very education they need to help manage society and be active in it in the first place. Free, Tax-funded education including universities is a guarantee to a steady stream of Jobs.
Health:
Good health for all is essential for any society because it is both humane, and ensures that everyone in a society is in good condition to work and manage their lives with much less worry. Tax Funded Universal Health-Care Ensures that there is absolutely no blockade towards peoples well-being.
Housing:
If everyone Were housed, Everyone would be stable enough to even get an education, or pursue a job.
Food:
With everyone fed, everyone has the fuel they need to perform well in society, and to also prevent starvation.
The purpose of jobs:
With this type of welfare, some may ask what the purpose of jobs are. Jobs, especially in the modern context, should strictly be for non-survival investments such as personal entertainment, Innovation, Business, using electricity for non-essential applications, fulfilling dreams, etc. With survival conditions ensured amongst all members of a society, Anyone can pursue their dreams without worry of financial strain. a lack of funds cannot fulfill such extra-survival activities, thus leading to extreme boredom.
In the future however, some key advancements such as a fully automated industry, a mostly automated service industry, and the development of star-trek like replicators, will out date the system of having to get jobs and paying taxes. Plenty of these type of replicators could produce such an excess of food and gadgets that the whole concept of money becomes as pointless as the idea of buying air to breath. Based on some relatively recent developments, there is a very good chance many of these future developments will occur at least to some extent within just the next few decades. In this future, People could pursue all manner of creative task, innovation, jobs, and education simply as a hobby.