For those who have read Allegiant...

You should read Veronica Roth's blog on why she ended the Divergent series in the way she did.  If you have not read Allegiant, but you plan to...DON'T go read the blog.  The spoilers there would ruin it for you.  If you have read it, you might have traipsed around in a funk for a few hours like I did when I finished in on Sunday.  But after processing it for about 24 hours and then reading the blog, it made more sense and I felt a little better about it.  If you're interested in reading the author's personal thoughts on the ending, click here!