Our common reality, the one that doesn't depend on belief, the one that contains the objects and processes that affect experience, the one discerned and tested empirically, the one those applying critical thought to the evidence of the senses discover, the one leading to the periodic table.
Perhaps there isn't for you. That's not surprising considering the difference in the way we decide what is true about the world. There are people who agree in detail what reality is like, and they are demonstrably correct, which is also not surprising considering what it is that they consult to determine the nature of reality. And it is not surprising that those who simply pronounce what reality is like without sufficient supporting evidence will come up with accounts that don't match one another or that of the empiricists.
Yes, there really is a sun. Really. A real sun. And one can know so empirically, experientially. That's what makes it reality. To the extent that you make empirical judgments, you are part of that common reality. You know all about reality that you have experienced, and its the same one I experience. Water feels wet. We sleep and awaken. People are born and people die. In between, they eat and breath. This is our common reality, the one you say doesn't exist.
Faith based thinkers will add to that, and each differently. What they create is not reality at all, but we can call it a private reality in homage to the fact that they believe it.
The god believers are numbered among the people in the 40,000 denominations of Christianity and countless other religions with mythologies, who create their reality from stories believed by faith rather than evidence. If you ask them about the nature of the gods they say they believe in, you'll see what I mean about them extemporizing as they go. We see it here on RF continually with the just-so apologetics generated ad hoc. No two have the same concept of God, because they feel free to just define gods into existence
What we perceive as science today is a fairly new idea. Theists have perceived the world through a deity centered view for much longer. To assume you know more than they is just arrogance.
Really? Theism has generated no knowledge. Empiricism has generated all of the actual knowledge we have. I've seen the theists view of reality. It's in holy books. It's on RF. It will be the cause of American women losing rights based on a "reality" that includes a deity that disapproves of abortion. It's the cause of homophobia in the West, based on the "reality" of a deity that considers homosexuality an abomination. Reality according to Christian theists includes a resurrection form the dead. It is not arrogance to point out how sterile this kind of thinking has been, and how stellar the results of empiricism have been. It's demonstrable fact.
I understand why the theists would like that kind of credibility with their faith-based pronouncements, which, as you indicate, have filled the world with ideas a lot longer than the scientific method, but being ancient doesn't make them venerable, just older than the scientific contributions, which have made life longer, healthier, more functional, more safe, more comfortable, and has made the world smaller and more accessible, and this more interesting and entertaining. Those benefits from science are the sine qua non of correct ideas (knowledge).
Biblical myths, gospels, and prophecies do almost nothing for man except comfort those who believe them. I'm sorry if the latter compares unfavorably to the former, but pointing that out is not arrogance. Arrogance is claiming that they are equivalent. Asserting their equality or equivalence given the difference in their track records is the arrogance here.
Einstein doesn't go further than his photoelectric, because his relativity theories are just pure imaginations, not science at all. Definitively physical reality and the God don't accept his relativity theories.
You might want to rethink posting things like this. You're posting on a topic about which you inadvertently declare you haven't studied to people that have studied and understood it, and know that you are wrong.
All you can accomplish with such a post is to disqualify your other opinions about science if they disagree with the mainstream. There are people that do that successfully, people who overturn older paradigms with their keen insights, but they are knowledgeable about existing science including the parts they are challenging. They don't make mistakes citing the mainstream position.