Android insecurity? As someone that works with messaging systems for a living, our company switched our BlackBerry handsets to Android / Samsung a few weeks ago and haven't looked back. We're completely satisfied with the level of security that our Exchange / Certificate servers are providing. Though possibly not the military-spec security that BB provides - it's enough for most corporate environments, and WAY easier to implement than BES.
Personally, I switched to the Samsung Note II after being a loyal BB user for many years. I'd recommend you try one of the latest Jellybean phones before bashing them. From experience, I can absolutely tell you that you're missing out, and locking in a 3-year contract on the unproven BB10 platform may be a mistake. There's a reason Android devices are a runaway success - they really are that good.
Ballmer took a couple of easy shots at Apple and Google, calling the Android ecosystem "a little bit wild from an app compatibility perspective, a malware perspective -- it's uncontrolled." Apple, he said, offered a more controlled ecosystem, but one that was "quite high-priced."