Why did utopian communities believe in self sufficiency

Utopian communities believed in self-sufficiency because they sought to create a society that was independent from the outside world and did not rely on external sources for their needs. They believed that by being self-sufficient, they could create a more harmonious and fulfilling way of life that was free from the pressures and influences of the outside world. Additionally, self-sufficiency was seen as a way to promote equality and cooperation among community members, as everyone would contribute to the community's needs and share in its benefits. Ultimately, self-sufficiency was viewed as a way to build a more sustainable and prosperous society based on the principles of cooperation, equality, and independence.