Actually morality is dependent on many aspects. Yes religion is one of them, but philosophy and culture play larger roles than religion when determining one's likely morals. There are outliers who derive their morality from one source more than others, philosophy and religion purists standing out more from more culturally minded individuals.
Seeing as how you're referring to one god, you ignore large swaths of humanity that derive portions of their morality from other gods. Indeed, even within you're own religion, there are those who disagree about what exactly your "for totes objective" morality.
You seem to think that lacking religion leads to amorality at best and immorality at worst. But that is a subjective view, people you view as immoral are acting according to their own moral code. You are the immoral one in their view. Amorality would describe something akin to a very nonsocial animalistic lifestyle, or a lifestyle that ignores empathy to others based on what are likely cognitive disorders.
It is very hard to be consciously amoral and immorality is a subjective view.
Imagine a traveler in a strange land, who breaks some custom. They are either unaware of it, in which case they were acting amorally; or they were acting immorally because of conflict with their own morality.
They aren't part of that society so their morality is alien to the locals.
In as much, those who come from different cultural, religious, or philosophical backgrounds will differ in what they deem to be moral.
I can't speak for your morals, so instead I will answer with mine. I see morality as stemming for consent and empathy. Humans and many other animals share a theory of mind, or the awareness that others have thought and autonomy. Those moral action takes into consideration what would not limit the freedom of other conscious beings. Being a fellow conscious being, it is within my best interest to preserve the general welfare by helping others, this improves the fitness of my community and thus the quality of life for both myself and those within the community.
As stated above, I recognize that my community is increasingly large and the best course of action for the best quality of life for all, is a cooperative approach to life.
I don't see where a god was needed in that summery.
