Computer chips implanted into the body to regulate vital functions. Nanobot technology to repair or modify biological cells. Countless methods to sustain and prolong your biological life.
Eventually the biological dies, but the virtual simulation is not interrupted. Instead, your consciousness is uploaded to the world's mainframe server, where your mind is allowed to continue on it's journey of self-discovery within the virtual world. You and your loved ones can continue to interact virtually, forever. Where you can continue to explore, to learn, and to experience life long after your death.
You are virtually immortal.
[1] my concern is how this line of thinking and "living" might continue on a path of mindlessly destroying everything that isn't it.