Well, to my experience, they are not. They exist and are real although most of the time we are not tunned to get into close contact with them and, thus, the main contact is through derams.
But that doesn't make them less real although out of usual reach, most of the time.
And are those little mut brightfull momments that some times happen, when one least expectes them, that can make us start understanding that the whole Universe has much more that what we can see, from here!.....