Re: Battery Life
If that's all you need, why not just get a standard modern dumb-phone?
But RIM must compete against 2-3 platforms that span the smartphone-tablet spectrum. They simply don't have that. They have spent their reserves just to come up with phones that haven't been released yet and nothing to speak for them but suspiciously conveniently positive 'leaks', and silly talk about an OS that runs cars and nuclear power plants; as though that meant anything to consumers (like yourself) who simply want a phone, smart or dumb that does what they want.
As for the practicality of a full multitasking OS; if Apple thought that was more important in the immediate now for productivity than offering an OS fully supporting 30,000 Chinese words/characters handwriting recognition on a tablet, it would not have been rocket-science to implement it. You know, there's a market for corporate smartphones that support that level of productivity.
And security? Full military grade security is not to be found on a BB phone, and even if it was, security is only as good as the full ecosystem hardware, architecture and the user's common sense and safe practice, and the laws of the country in which it is deployed.
Finally, to return to battery life. If all Android and Apple and MS users want in a phone is to make phone calls, then they don't have to 'waste' their time draining it on apps. Where is the BB advantage then? Any phone will phone.