Letter to author, main character, another person who should read the book

  I want to write this letter to the main character "Of Mice and Men". I don’t understand why you have to kill Lennie even though he kills the boss son’s wife but he kills her just by accident. Also you could take Lennie to other place that the boss son’s couldn’t find him, you and Lennie save some money so you guys could buy some farm. Why you kill Lennie for?  

 I know that John Steinbeck which is the author want us to think about the ending that why did  George kill Lennie. But I think he should give us an ending. Anyways I really enjoy this book, thanks for writing this book. I hope there are more books like this book.