I came to the BB family of devices for it's security in the BB's setup. I have stayed for the same reason. The PB has a great UI and love watching movies on the crisp screen... love the bezel swipes too.
What I love about BlackBerry is the efficient OS and all the options, menus, shortcuts and amazing keyboards. The fit in my hand is lovely, battery is changeable if it ever dies and they look sexy (specially the Bold 99). My BlackBerry reminds me why I'm so addicted daily, so I'm sure I left something out.