Need help please

What do you think? Should this go at the start or finish of my book? OR should it be on the back of the book? ^^

No one ever see’s the true beauty of life. We miss numerous things in our lives that can bring tears to your eyes. If you don’t open your eyes to the things around you, you might miss everything. Some may take life for granted. But maybe one day someone will realize that there is more to life then parties. There’s a whole world to see. What would you do if there wasn’t a world to see at all. If there were only a few left on the planet. And everything was gone. Would you wish you opened your eyes?

I think this should come at the end of the book, it makes the reader think about life, while otherwise, the reader cant think about it in the beginning because he is reading furthur. Nice phrases btw, love it.