It is a yes and a no from me since Nasa hasnt fully explored it and due to the water on the planet it is very possible their could be unidentified life forms which could possibly be dangerous. If mars has at least some kind of oxygen, probably not , we would most definetely be unable to live there. But there is possible chances and we will find out as scientific research continus. Recently, 3-4 female astronauts were meant to go to Mars but Nasa hadnt made the suit big and strong enough to with stand the air pressure and could not hold enough oxegyn. But it is obvious Nasa is trying to discover more and I think they are on to something, something big.
It is most likely the next inter galactic mission will be taken to Mars with the correct equipment to withstand the circumstances. Lastly I think we would not be able to inhabit Mars due to the sudden storms and unexpected weather conditions. It is possible scientists could figure out the weather in Mars using the equipment usec on Earth ut the weather and signal could affect the outcome and we would not be prepared.
In summar, I believe we could NOT inhabit Mars..