Do you want a phone where you are going to pay an additional service to push e-mails for you ON TOP of your data services you are paying for? No? Then BlackBerry.
Do you like the ability to connect BlueTooth headsets, exchange media via BlueTooth to another BlackBerry/Computer/Media Center/Other Phone? Yes? Then BlackBerry.
Do you value device security and encryption protocols? Yes? Then BlackBerry
Do you like being able to install any app you choose on your BlackBerry without having to "Jail Break" it, and void your manufacturer warranty? Yes? Then BlackBerry.
"He that hath no sword, let him sell his garment and buy one."
Jesus, Luke 22:36
"The deadliest weapon in the world is a Marine and his rifle."
Gen. John Pershing, U.S. Army