A cyberpunk world where robot assistant/friend with a highly sophisticated AI can be bought and customized to match your personality, accompany you everywhere, have delightful conversations with you about your interests. Kind of like Ergo Proxy, but without the whole domed city thing. (So that socially awkward people like me can have friends. *cries in a corner*) The robot will be connected to the interwebs 24/7 so you can ask them anything and all your stuff like movies, music, etc is stored in the cloud and your robot can access it anytime. Internet speeds are, of course, extremely fast. Also there micro chips embedded everywhere kind of like NFC tags, that record everything and basically keep you connected to everyone. For example, your digital signature enables all payments so you don't need to carry money, or buy bus tickets/movie tickets, etc. The microchips will recognize that you were there and automatically charge your account. I think this will help to reduce crimes because it will be easy to catch the criminals. No one will be able to kidnap anyone because their location will be easy available. This info won't be available to everyone obviously. Only to those you list as your close friends, and to the cyber police (an army of robot computers) who will never abuse it.
I hope that a technologically advanced world like this really comes. Till then, I shall be in cryo-sleep. Goodbye, world.