"Loneliness is the first thing which God's eye named, not good" - John Milton (English poet, Historian and Scholar. 1608-1674)
I won't simply use 'lonely' as a word to describe aloneness. The single physical existence in a quadrangle space wasn't appropriate to define loneliness.
Wikipedia defines loneliness as a feeling where people experience a powerful surge of emptiness and solitude. It's far more than a feeling of wanting company.
It's an experience to examine my existence value alone. God is omnipresence.