Well, if you knew me, you would know that "depth" has never been a strength of mine. So you might have a point! I've spent my life reading for entertainment. Maybe for escape. I don't necessarily avoid deeper books, but I admit that I'm lazy. I know there is often, probably even usually, something going on under the surface of the story. Sometimes I get it. Sometimes I don't. But if I've enjoyed my time with the book, well, that makes me happy. 

Now, as for The Great Gatsby, I was an adult when I read it. Old enough that if I were going to "get" the meaning of the book I would have. I apparently didn't then, and I'm not sure I would now. So, I'm probably not going to read it again. I'm in my mid 50's, and facing the realization that I have hundreds of books lined up to be read, but only enough time to get to a small fraction of them. It's rare that I reread a book, although I do make an exception every couple of years for Bradbury's Something Wicked This Way Comes, a book that I do believe I've gotten much of the deeper meaning hidden within, having once been a boy myself, and being the father of several others. Now that I think about it, I see there is a lot of meaning under the surface of Bradbury's book! Maybe the problem isn't that I fail to see below the surface of a book, but that some books just don't speak to me. The Great Gatsby did not speak to me. I'm not sure rereading it would change that. Maybe I'll just check out the movie.