Can something be said to exist when there is no way of observing or measuring it?
If so, how can you really know that it's not just a part of your imagination?
Further, how can anyone else know except to accept your personal testimony. But then, if I accept your testimony as true, then how do I not accept everyone else's as also being true?
That would be utter madness which would leave one accepting claims of invisible fire-breathing dragons as readily as accepting any god claim.
No, I'll stick with what can be observed and/or measured.
You must understand that the enjoyment I have in smelling a rose, is not shared. Nor do some even like roses, because of the thorns.
I don't make anyone take what is freely given. Smell the Rose of Sharon.