There are a lot of reasons I feel this way, but this post is just my latest example.
Nice job to Benny Cornellissen:
http://blog.bennycornelissen.nl/bash-4-x-on-osx-the-bash-that-apple-wont-ship/
Also, if you want to run an updated bash shell on your Mac, then Benny's your uncle, and you'll get introduced to Homebrew (the missing package manager for OS X), which you should be using anyway. Seriously.
