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Teleoperated robots are more agile than humans in space-suits
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No need to put on the space suit - it takes 45 minutes for an astronaut to don a spacesuit in the ISS (not including the extra hour spent in the suit breathing pure oxygen before you go out).
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Safer for humans as they remain within the hab
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Enhanced vision included automatically, and can make the surface of Mars seem earth like and easier for humans to understand.
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Everything the humans see is live streamed so can be automatically recorded. Same for everything they do so if something goes wrong you can play back the recording to see exactly what happened.
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Costs less - much easier to land robots on a surface than humans
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More exploration done for the same cost - each human can control many rovers, and they can also continue semi-autonomously doing things when the human releases control
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Rovers are left on the surface when the human mission leaves, and can continue to operate for years later
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Rovers can be sterilized for exploration of surfaces that can be contaminated by life. Humans cannot be sterlized in this way without killing the human
See this article at wired.com http://www.wired.com/wiredscience/2012/11/telerobotic-exploration/all/
