Other people have said that it will change humans forever because, first, we will realize we are no longer at the top of the food chain and, second, we will see that consciousness itself is not what we think it is.
Caveat: We still don't know what we are dealing with here. But, as some have said, we may not know what it is, but it isn't "nothing."
I went back and read some of the "Meier/Semjase" prophecies. Ouch! They've been dead on. Hard times are comming.