Torture at the hands of Microsoft Word

You know how, sometimes, you working are in a Word document, and it ends up being just a line or two into a new page at the end, and you finally edit down the rest of the document so that the one-line new pages is no longer necessary, yet Word won't let you delete the page for no apparent reason? AGGHHHHH. Why does this happen and what can be done about it? I sit and sit, highlighting and deleting empty spaces, and nothing changes, and ultimately I am forced to email around a document with a giant empty blank page at the end.