smart drug

By, say, 2020 we (at least the early adopters, not luddites) will be controlling our metabolism artificially a lot (using a combination of implanted automatic smart drug-release devices and genetic therapies). There will be a few cases when humans will be enhanced significally changing their genetic code, when this can be done in a very safe manner and without side effects (this might come from one of the sports modifications). The parents will have great freedom in defining the DNA code of their kids to get rid of all bad stuff and ensure that good stuff is there, but no fins or fur yet. We will also have many artificial parts and will spend a lot of time in virtual worlds.