Not to a believer because they operate by faith not facts. Religion proves itself to be man made because no god ever invented operated above the level of a spoiled 8 year old psychotic...

We will all die not knowing for sure, but objective scientific facts are as close as we can get to absolute truth.

Whether or not there are any gods, and I believe there are not, religion itself is a social construct. If there were gods, they would continue to exist even if no one worshiped them, just as people worship even though there are no gods. Religions have more or less evolved over the millennia to fit the needs of their societies, so without knowing exactly when and where the first religion started, it would be impossible to prove the origin of religion, just as it is impossible to "prove" the nonexistence of gods or other unlikely beings.

I don't see any way to prove it was man made, even if I believe it was.

All religion is man made. There are definite historic acts leading to formation of any club.

It depends on the religion.

I consider Scientology a religion (and a very toxic one at that). It was created by L. Ron Hubbard.

Buddhism was created by Buddha.

Those two, and quite a few others, including Pastafarianism and Mormonism, are easily proven to be man made.

It gets more difficult to "prove" the origins of other religions because they have been lost over time. We can make arguments based on logic and circumstantial evidence, but true believers can argue that is not proof.

The protozoan is quoted by science to have no evolutionary history, but of course it must have. To explain my findings in full would take some explaining, so let me try it this way. The primates have an evolutionary history and part of this history is all life cannot seeing accurately. It's not seeing accurately that feeds our intelligence. An example of this is when we come against something that we cannot explain, we reach for the supernatural in a desperate attempt at clarification, but what we are actually doing is the opposite. All life is in the same boat. The male jewel beetle couldn't tell the difference between a female and a bottle because both were the same colour and pattern. The primates didn't carry on up the evolutionary ladder to our level because intelligence had been achieved; there was no need for them to reach our level, staying as they are is more beneficial to an intelligent species. This could only happen if all life is connected. Life started as one and is most likely to still be evolving as one. (One energy that is.) The jewel beetle is proof that life cannot see accurately and primates could just prove that we are all connected. The protozoan is part of that energy as is all the rest of life, which could explain the diversity..The protozoan is just fitting in with what that energy allows. The protozoan's evolutionary history is the history of a universal pattern. If all life reached the same level of intelligence, that would destroy purpose; the purpose that is paramount to our existence. Keep thinking of life as one energy and compare it to the energy pattern of a black hole. Black Holes happen when gravity becomes too much, it is determined by the size of the star. This is the same pattern designed by the laws of the universe to keep the balance that is paramount for the universe to exist. Let us ask ourselves if the same pattern applies to evolution? Does this mean that the same thing will happen to us? After all the same universal patterns apply. This overload would apply to life if all life reached the same level.of intelligence; we would implode. (Extinction.) We are made of star dust, we are part of the universe and we have to conform.

read Yuval Harari's "Sapiens"

Like whom else is in the race?

It might be a matter of definition. We can, and have, proven that all religious texts etc. were composed and written by people (coincidentally most of these people were men) and in this sense were man made. Almost all claim that an invisible, undetectable, and immaterial being told them what or about what to write. Pastafarians, on the other hand, admit that they just made it up, hence are the only provably honest religion.

Ummm what's your alternative?

What proof is there that it's anything else?

The fact that there is, nor ever has been, any evidence, facts or data to support the claim of the existence of any god(s), is proof enough that god(s) is a product of man's imagination.

Welcome to the asylum. Enjoy your stay.

It's been proved to be man-made, repeatedly.
The believers refuse to accept that.

Religions are organizations. Organizations are created by human beings. Not that complicated.

Everything in religion tells us it is man made. If you study the catholic church history you'll get there.

I don't think natural science can prove it but I'm hopeful that psychology will do it.

Religion is a human practice, which is man made, but religion is not belief nor faith and those who have faith may claim a 'calling' or a demand which they feel, and of which nothing (really) can be said.

I don't think so. Common sense to one person isn't the same for all of mankind.

Look at its history.

Only if you have commons sense.

We can make our own religion. That would prove it.

Religion is man made.

The idea of divinity behind those religions is a lot more troublesome as they often are too far removed from what we know as reality to conclusively disprove.

For example. I believe in 'Dave', a 3-headed giant ostrich like being existing in another dimension who created this universe when he sneezed.

Sure, it is a religion with just one follower. But prove me wrong.