It is an exoplanet that might offers life and if that is the case then mankind might be able to inhabit an exoplanet like they inhabit the earth...
It was first thought that Kepler-452b might be livable but that was later decided not to be the case because of the atmosphere in part but mainly because of the gravity which was twice as strong as earth's gravity. We could get down to the planet but it would be almost impossible for us to leave or two live since all objects would weigh twice as much as they weigh on earth.
But, instead of looking for earth-like planets, we should be looking for Sun-like stars.
Why?
Because, the sun is the most critical aspect. If a planet is too close to the sun, it will be too hot. If it is far away, it will be too cold. PLUS, if the sun-like star is too big or too small, conditions on earth-like planets will not be livable either.
Therefore, we should look for the sun-like star first.