Just by becoming atheists, atheists think they are rationally superior and more qualified to opine on issues related to religion and origins. Worse, this attitude often comes with an arrogant certainty that they have no need to listen or learn from people who've actually considered and studied all possible worldviews, and concluded that theism is the most case-adequate explanation of our existence.
Selfishness and price
This comes together with an attitude of selfishness and pride. Pride is attempting to displace God with self or living as if we were the highest instance of reality, nobody above us, and no God. Both lead to apostasy from God. Selfishness is preferring one's own ideas as opposed to God's truth and revelation. It is an implicit and logical consequence and constitutes the antithesis to love God, and our next, and as a fundamental and positive choice of preference of self instead of God and our neighbor. Egoism and selfishness are on the opposite end of loving God, and loving our neighbor. Selfishness is expressed as the preference of exaltation of self, used to oppose anything that expresses God's existence and his virtues. It is the key explaining nearly and perhaps all sin. Selfishness expresses itself in many different forms. Sensual, lustful, inordinate, appetites, such as avarice, ambition, vanity, pride, covetousness, idolatry, unbelief, rebellion, lawbreaking, and pride all expressions of selfishness.
Atheism is an expression of rebellion and disobedience against God. All people possess volition, which can be exercised either in obedience or disobedience. We see the New Atheists direct their rebellion against the revelation of God in creation, conscience, law, and ultimately the person of Jesus Christ. There are many examples as the Israelites “stiff-necked” and were “stubborn” people who committed a “great sin,” thereby rebelling against the LORD (Deut. 9:6–21). The Apostle Peter warned his readers not to rebel as did those who lived during the time of Noah and fell under God’s wrath in the flood (1 Pet. 3:20)
The sin of unbelief is a major theme in the Gospel of John. “Those who do not believe are condemned already, because they have not believed in the name of the only Son of God” (John 3:18). Jesus equated unbelief with disobedience (John 12:48) and described unbelief as blindness (John 9:39). Unbelief and disobedience are so intertwined that some theologians define sin as “unbelieving-disobedience” or “disobeying-in-unbelief. Unbelief in the New Testament is depicted as: blasphemy against the Holy Spirit (Matt. 12:22–32); an evil, unbelieving heart (Heb. 3:12); deliberate sinning after the reception of the knowledge of truth (Heb. 10:26–29); and the “sin leading to death” (1 John 5:16). Unbelief includes the rejection of the general revelation of God within creation and conscience (Rom. 1:18–23; 2:14–15). The rejection of Jesus Christ as the Son of God, the revealer and Redeemer, is the quintessential denial of the light and truth of God. Although the wrath of God is currently manifested against those who refuse to believe his general revelation (Rom. 1:18–19), the rejection of Jesus Christ as Lord and Savior compounds the condemnation of those entrenched in unbelief.