If there were a god he/she/it would be giving the same message to each nation on every continent. The imperative would be to live in peace with justice for all. The purpose would be to create a world of people making the decisions in the interest of the health of individuals, tribes, communities, and nations. There would be no fight over doctrine. There would be an emphasis on community building. Voluntary population control would be part of the litany. The focus would be on cleanliness to prevent disease spread and an emphasis on problem-solving and conflict resolution. The highest value would be win/win with each one having a valid right to contribute and consume.
What does exist seems to be an appetite for the accumulation of wealth and treasure, especially some churches. There are hierarchies that create class systems.
A participatory structure based on need and availability of food and resources requires discipline to manage. If god existed, he/she/it would guide in setting limits. Sexual appetites based on desire would provide birth control instructions that work.
If there is no god, any gods, and there is nothing listening or answering prayers, and there is no savior to redeem us, and there is no heaven, hell, nirvana or whatever, then Homo sapiens have to take charge of their lives. Stop depending on imaginary powers to solve problems.
Begin to think in terms of taking responsibility for ones' safety, security and stability. Provide food for all and teach our children how to be self-sufficient. Provide work in maintaining our infrastructure. Develop strategies for access to life-long education and health care. Create the means to care for elderly through the aging process until death.
Because there is no god, and Homo sapiens evolved from the great apes, and because Homo sapiens have the ability to see what is real, and identify problems, they can search for options, develop action plans and evaluate progress. We, unlike great apes, can manage our lives.