In general, a nonreligious worldview is absent 
supernatural interpretations, whereas a religious worldview
permits or often embraces such conceptions.

Along with religious worldviews, nonreligious worldviews have been present and important throughout recorded history.  A significant proportion of the world’s people today have a nonreligious outlook on life and the cosmos.

The worldview of nonreligious people simply don't have the major conceptual elements found in the worldview derived from any religion.  A nonreligious framework for human living is void of any divine entity or deity’s involvement in human life or of considerations of existence after death.  Perspectives on morality are likewise naturalistic.

As religions are categorized according to various fundamentals, so are the varied life understandings of the nonreligious outlook.  Rather than Buddhist, Christian, Hindu, Jewish, Moslem, Sikh, Tao, and so on, one finds such categories as Agnostic, Atheist, Freethinker, Humanist, Materialist, Rationalist, Skeptic, and so on. Recently the term "bright" has been presented as a single term that represents all individuals having a naturalistic worldview.

Behavior and Worldview 

One must be cautious about relating conduct to conceptual framework.  It is all too easy to fall prey to attributing false characteristics to individuals.

Many people say of themselves, "I am not religious" or "I do not have a religion."  The individual may actually hold to a religious worldview, however, with mental assumptions readily characterized as religious ones.  Images of a divine or of spirits or magical forces may populate their minds, and they may use what are deemed supernaturally revealed dictates to guide their actions.  They may continue to believe in miracles or other metaphysical events that go along with a religious tradition, or with some blending of traditions and practices.  

Nonreligious people are all across the map regarding their stance toward religion itself and/or any particular worldviews.  Many nonreligious people see much value in religion (for others). Others may take a rather dispassionate view.  Still others voice merits and drawbacks based on their observations of extant society.  There are nonreligious people who do dislike religion, of course.  Their aversion may grow out of personal experience with a religion, or it may derive from reasoned analysis (e.g., scrutiny of religion's history to reach conclusions regarding its intrinsic worth/harm to humankind at large).  It is important to bear in mind that a person's worldview comprises internal mental conceptions.  These are a framework beneath the individual's ways of living. Personal worldview and "attitude toward religion" are separate characteristics.  

It is possible that a person who holds to a nonreligious worldview may still attend rites and participate in traditions of a familiar religion, or follow its codes "absent divinity supposition" or other elements of the religious view.  Recall that a worldview is actually an individual’s internal mental framework of cognitive understanding about reality and life meaning.  It serves as a basis for action with respect to the religion realm, but it does not necessarily rule outward behavior (declarations or statements or conduct) because many additional variables (family or societal expectations, material incentives and penalties, and so on) may enter in as well.

A Religion/Nonreligion Border Zone

Deism is a life stance that was common in this country at one time (many of our nation’s founders were Deists) but now is rather scarce.  Deism seems to rest in a gray area between religious and nonreligious worldviews.

On the surface, 18th century Deism seems a religious worldview because the fundamental reasoning entails a transcendent deity (the Creator) who is apart from/(above) his Creation.  However, some scholars view Deists as having a nonreligious worldview.  A dictionary may specify "See Skeptic" or "See Atheist" within the entry for Deist (believer in Deism).  Which life understanding do Deists hold—a religious view, or a nonreligious one?

The dual perspective on Deists derives from the fact that, although they reason that laws governing nature do presuppose a supreme lawmaker or divinity, Deists firmly reject claims of supernatural revelation and generally follow an Atheistic life pattern.  The fact that they regard the world’s "creation" as having been completed and do not believe any divinity is presently involved in the world or in any human affairs helps somewhat to clarify this enigma.

Freethinkers and Study about Religion

In their departure from authority and tradition with respect to conventional religion, both the Deism of yore and the irreligion of today exemplify what is termed, “Freethought.”  Presentation of the history and social role of freethought in its varied forms is requisite to providing students with well-rounded education about religion. Along with any examination of different religions, some consideration of the position and actions of doubters and unbelievers is deserving of consideration.

A survey of the nonreligion domain itself makes for interesting study of human thinking.  For the contemporary persons who hold a nonreligious worldview, there are no divine entities of any sort inhabiting the world in which they abide. Beyond this commonality, though, there are interesting philosophical differences among the diverse categories of the nonreligious named above. Disparity in their concomitant societal position offers especially fascinating learning about social practices and taboos.