Lyric discussion by xarexerax 

Cover art for Shine On lyrics by Apoptygma Berzerk

For some reason, I keep thinking this has something to do with someone who was raised in a private Catholic school/boarding house -- the references to such can be seen, I think, in:

"I need a sister - I'll just stay" ('Sister' being a nun, who would be the teachers/authorities in such a place) "In a church or in a school" (the dichotomy of these two as being similar or the same place)

I think it has something to do with the loss of innocence following being raised in such a sheltered place, and thinking back on the way things were then -- when it was a simpler time, with less to worry about since the protective nature of the institution would "block out" things that are negative or hurtful in many ways; it seems like the narrator may be calling out for that simpler, easier time, frustrated with the fact that he's moved on from such a sheltered place into the "real world" -- and that he, now 18 and graduated from the place, still feels young and unready for the life outside those walls.