Not just WE, but our body too are being invaded. The use of nanobots in the medical field is predicted to increase gradually by 2029. Currently it's used as a DNA microbots, that delivers drug to a precise targeted location for a much effective treatment. It is said to reduce the possible chances of side-effects.
Also scientists have found a way to create shape-shifting robots using the concept of active matter, whatever that means. Check this out
All the sci-fi movies we watch, that tells you that the future of earth is robots and machines, well I think there's a huge possibility.