What does the song Perfect by Simple Plan mean?

Its about the peer pressure everyday kids feel by their parents wanting them to be just like them and prefect. Stating the lyrics "I'm sorry i cant be prefect." And the kids don't understand their parents anymore/

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Recently someone asked me what does 'it' stand for in the line 'cuz we lost it all' ? Well it means just that. They lost everything that they had. Their love, trust, friendship etc.

But this song goes furthur then just that. It can apply to anyone and everything that's happening to them. Because I am sure that at least one someone was felt that:

No matter how hard they try they can't make their parents proud

or they feel they are never gonna be good enough

Or that they didn't grow up according to parents plans

Or That its never gonna be alright again

Or that they just want or un away...

Well its quite a moving song with an Excellent film clip.