I feel the same way as this commenter: A Peek at Blackberry 6:

“In truth, it’s a bit painful to watch. As a former Blackberry user, it’s great to see RIM trying to improve the functionality of their operating system with new features. Sadly, it looks dated. Looks may not be everything, but they definitely help when one is making the decision to purchase.”

It goes further than just looks.  As someone who has written and maintains several BB apps, I know you just can’t do near as much on a BB as on iPhone or Android.  That’s a dealbreaker for lots of people when deciding which device to buy because smartphones have evolved into mini-laptops in a sense.  The quality of the platform is largely driven by the apps available for it.

I want to root for BB, I just can’t until they get onto a modern operating system.  I still think they should take Android, layer all their security on top of it, and start fresh.  Their current OS still has roots in pagers from 15 years ago and it shows.