What is the meaning of the song cancer from your chemical romance?

This doesn't mean every song is about some fictional characters story, only that it fits into the theme and story. Our band has heaps of songs people automatically assume are about girls, broken hearts ect, that are really about relationships between family members, or friends or even different band members, management ect. But write it using a guy/girl relationship as a metophor, and suddenly it suits an album, or style, an awful lot better.

I figured this song used cancer as an meterphor for something, maybe touring, comittments, addictions, ect, and the effect it has on those around the "victim". And the way it was written allowed it to fit seemlessly into the "opera" without sounding out of place. Allowing them to write about how they feel, without sounding odd on the album.

Im not condoning using cancer as metophor, but its well feesable. Imagine the bass player (i don't know his name im not a massive fan of the band) who according to an interview I read in a guitar mag, left the band (I don't know if its permanent or not, or even if its accuarate, nor do I really care, this is an example.) to get married. Imaine you met the love of your life, then had to leave her home why the band went on tour (and yes, ive been there, its hard to play shows every night when your heads 000's of kms away.) That band/tour can suddenly become like a cancer on the relationship thats become so important in your life.

Anyway thats just a thought, I only came on here cause I gave my interperation to some musical friends the other night and they said "well obviously its a metophor" I was just curious what the rest of the world thought.

LOl OK well I gtg tomorrow I go home at 6:O5! I cant wait to be home in my bed! Ill be home around 9 OclOck call me gangsters ha ha!