Even if I'm writing music, it's with a lyric in mind, to communicate some kind of feeling.
Music is the marriage of the feelings of the living to the wisdom of the dead.
It's not my way to talk about my feelings. They're impudent to myself, so it wouldn't make any sense if I tried to explain them to anyone else. I've never been to therapy - not interested in it.
Usually there's no specific reason for loneliness - it's a broad feeling.