1) Massive economic growth. By allowing human minds to run on substrates that can be accelerated by the addition of computing power [...] economic growth [...]will accelerate greatly.
2) Intelligence enhancement [...] By observing information flows in uploaded human brains, many of the details of human cognition would be elucidated. Running standard compression algorithms over such minds might make them more efficient than blind natural selection could manage, and this extra space could be used to introduce new information-processing modules with additional features. Collectively, these new modules could give rise to qualitatively better intelligence.
3) Greater subjective well-being [...] With uploading, we will be able to see exactly which neural features (”happiness centers”) correspond to high happiness set points and which don’t, by combining prior knowledge with direct experimentation and investigation. This will make it possible for people to reprogram their own brains to raise their happiness set points in a way that biotechnological intervention might find difficult or dangerous.
4) Complete environmental recovery [...] By spending most of our time as programs running on a worldwide network, we will consume far less space and use less energy and natural resources than we would in a conventional human body [...] By transitioning from a proteinaceous to a digital substrate, we’ll do more for our environment than anyamount of conservation ever could.
5) Escape from direct governance by the laws of physics [...] In a virtual environment, the programmer is the complete master of everything he or she has editing rights to [...] Any civilization that develops uploading would surely have the technology to develop virtual environments of great detail and flexibility, right up to the very boundaries of the possible.
6) Closer connections with other human beings [...] By offering partial readouts of our cognitive state to others, we could engage in a deeper exchange of ideas and emotions [...] we’ll engage in much deeper forms of informational and emotional exchange that will make the talking and facial expressions of today seem downright empty and soulless.
7) Last but not least, indefinite lifespans [...] By being a string of flickering bits distributed over a worldwide network, killing you could become extremely difficult. The data and bits of everyone would be intertwined — to kill someone, you’d either need complete editing privileges of the entire worldwide network, or the ability to blow up the planet.