It is impossible to not have the existence of belief systems, religions and faiths.
I explained part of this in a latest video with someone in a discussion of transgenderism.
Which you can view by going to website address:
We briefly discussed how the separation of church and state is impossible and as long as mankind is unable to know everything, there's ground for uncertainty, doubt and faith/trust.
Many of you on this site debate with what you call sources. You trust the information is true, you believe it and you assert it as evidence.
But I ask you to prove what you're citing is genuine, you fail. The best you can say is "creditable"...." trusted"......"expertise"......"look at the track record".
That is your faith in your source.
Now here's what, you lack the belief in many things. True.
All the while, you're heavily rely on others , you rely on probabilities and you mistakenly call that proof. You incorrectly label what is evidence.
Likelihood is not evidence.
It is possibility which still holds uncertainty in it because you can't accurately declare what will be the outcome versus the chance of several different outcomes.