Please don't get me wrong. Your project is very nice. In all reality, it will probably never break. Having been a furniture maker for many years, I had to make sure that all the pieces I designed and built held up to any and all stress. I had a few pieces come back, ones that had been put through mental hospital, night club, or college dorm use...in other words, tested by gorillas. I know a little bit about how furniture breaks so I was just passing on some advice to you for future projects.
As for the glue joint that somebody commented on. I have see glued up panels split due to humidity shrinkage in winter, here in Minnesota. Not one of them has let loose or cracked along a glue joint. Fine Woodworking Magazine did a test of several kinds of glue for joint strength, including hide glue and aliphatic resin (Titebond) glue. Aliphatic resin had the strongest holding power.