You might get frustrated with the PCs at your Organization. You dont like microsoft word, you hate Outlook and you can't stand working with power point for your daily tasks?
BYOD helps you beat that. For instance my boss brings his macbook to work, hooks it via a vga adapter to the work monitor, uses mail mac to access his work mail, writes his documents in pages and when in need to access Windows he uses a virtual machine in his airbus ssd flash drive macbook
BYOD is taking over although there is still the question of security and data breaches