Avicious
Silent Inquisitor
Alone as in, by yourself, separated from God and disconnected with all other people.
I can tell you first hand what it's like to be completely alone honestly.
I don't currently have a belief system, I never did.
But that and being separated from all people I've experienced. I won't bother you with the details but After about 6 months I suffered severe depression, after 3 years I suffered hallucinations and attempts on my life.
It's all explained by psychology as lack of stimulation. It's pretty suck.
Trying to 'find God' didn't help when I did try. Not a surprise considering that was why I was in the situation.