You can never predict more than a few years in the future, but ideally I'd be a physicist, maybe working with Quantum Computing?
In terms of technology we have a few possibilities.
- 3D printing becomes much more normal and greatly changes the way we do things, basically 3D printing becomes the new computers in terms of societal affect
- Stem Cell research continues to advance, by this time we would of probably been able to successfully grow/clone a human, life expency is to about 130
- About 60% of the world is run by renewable energies, maybe more considering 23% of the world is run today
- Electrical computers begin to be replaced by optical computers, parallel processing and concurrency are perfected
- Quantum computers begin to emerge for practical use, but still have a while to go before they are commercially viable.
- Based on Moore's law, computers can fit 33,000 times more transistors per microchip than they can today.