When Epicurus died in 270 BC, he left his house and garden in Athens to one of his disciples, Hermarchus of Mytilene. According to the Oxford Classical Dictionary (OCD, 3rd ed. revised), "[Hermarchus] and his followers lived together, secluding themselves from the affairs of the city and maintaining a modest and even austere standard of living, in accordance with the Master's teaching. They included slaves and women."
Their community was called the Epicurean School or "The Garden" after the house's garden. According to the OCD, "the school was much libeled in antiquity and later, perhaps because of its determined privacy and because of Epicurus' professed hedonism. The qualifications that brought this hedonism close to asceticism were ignored, and members of rival schools accused the Epicureans of many kinds of profligacy."
"In Christian times, Epicureanism was anathema because it taught that man is mortal, that the cosmos is the result of accident, that there is no providential god, and that the criterion for the good life is pleasure." (OCD)
According to Epicurus.net, "Epicurus's philosophy combines a physics based on an atomistic materialism with a rational hedonistic ethics that emphasizes moderation of desires and cultivation of friendships. His world-view is an optimistic one that stresses that philosophy can liberate one from fears of death and the supernatural, and can teach us how to find happiness in almost any situation."
"The philosophy of Epicurus (341–270 B.C.E.) was a complete and interdependent system, involving a view of the goal of human life (happiness, resulting from absence of physical pain and mental disturbance), an empiricist theory of knowledge (sensations, together with the perception of pleasure and pain, are infallible criteria), a description of nature based on atomistic materialism, and a naturalistic account of evolution, from the formation of the world to the emergence of human societies." Source: Stanford Encyclopedia of Philosophy.
Comment: Epicureanism sounds completely reasonable to me. It's not surprising that Christians would have attacked it so vehemently.