No, being atheist does not necessarily mean one is hedonistic. Atheism simply refers to the lack of belief in any gods or deities. It is a position on the existence of gods and does not dictate one's moral values, personality, or behavior.
People, whether they are religious or not, can find fulfillment and happiness in acts of generosity and kindness. Altruism and empathy are traits that are observed in many individuals, regardless of their religious beliefs. People may engage in compassionate acts because it brings them a sense of purpose, satisfaction, or joy in helping others. These motivations can arise from personal values, a desire to make a positive impact on the world, or simply because they empathize with others' struggles.
While some religions may emphasize the importance of moral behavior and acts of kindness as part of their teachings, these values are not exclusive to religious belief. Secular ethical frameworks and philosophies can also promote compassion, empathy, and kindness as important aspects of a fulfilling and meaningful life.
It is essential not to generalize or stereotype individuals based on their beliefs or lack thereof. People's motivations and values can be diverse and multifaceted, irrespective of their religious or non-religious stance.