Holden's Dream Job feat. My Thought Process

After following Holden's story throughout the book, there has been 1 major question that I have wondered.  What does the title mean?  Finally towards the end of the book, Holden mentions "Catcher in the Rye" once.  In the book he tells his sister that he wants to be a Catcher of kids that are trying to run off of a cliff, which is all in rye.  But, I don't think this is meant to be taken literally.  After thinking about this, I realized that Holden wants to be the savior of kids, the cliff is something he sees as danger for them, and the rye is something that blinds them.  But what could the danger be, as this seems to be the key to the metaphor?  At first I thought is was phoniness, or being a phony because that is something that Holden really dislikes.  But then I looked at all of the people he called phony.  His teachers, the principals, the teens around him, pretty much everybody else....except kids.  Maybe the danger is growing up?  Throughout the book Holden has praised the kids around him, Allie, Phoebe, the girl at the park, to name a few.  He seems to love the thing that makes them kids, their childhood innocence.  He even mentions that when he talks about how when adults say thanks it's an obligation, but when kids say it, they say it genuinely.  So maybe Holden wants to "catch" the kids (or maybe their innocence) from the "cliff" of growing up.  The last part is the rye.  I think the rye symbolizes the desire of the children to grow up.  In the second to last chapter of the book, when Holden and Phoebe are at the carousel, Holden talks about how when kids want something, you have to let them get it.  Maybe this desire is the what the rye symbolizes.   So, Holden's dream job is not just to catch kids from falling of a cliff in a giant field of rye, but to save them from becoming adults and making sure they keep their childhood innocence.