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.
Between this, K'nex and the original Macintosh my life as a programmer was more a destiny and less a choice :P
Edit: Holy shit, when I google "little plastic bubbles with gears in them", Capsela comes up. Maybe google has gotten better at vague searches in the last decade :P
I think the medium that kids play with 'toys' has changed with tablet and phone devices. Now they're solving puzzle apps and building Minecraft cities - whether or not that's a good or bad thing, I'm not sure, but it doesn't bode well for toy stores.