Out of 3,200 planets, one would have to think surely there is one that is friendly to humans. What are the odds of this one tiny planet being the only place, in all that space, where we can live? I believe there have been studies that show perhaps there is water, or ice crystals, or some form of H2O on Mars. There is more that we don't know, compared to what we know about space. "Space" is not an easy thing to study. I think we may be surprised at what we might find.
Yes, with such a vast number of planets, it is statistically probable that at least one of them should have conditions that are at least possible for humans to survive in. Granted, a human colony will likely need a lot of support and may not thrive as they would in an exact replica of earth environment, but if the atmosphere and climate are close enough it should be possible.
Humans are remarkably adaptable. Even if there's not a planet that has a breathable atmosphere like Earth, we can build biomes or other structures as temporary settlements while we expand further outward. I envision future missions to gather more information on suitable planets as we get closer to making interstellar travel a reality.
Out of those 3,200, at least a few of them are probably habitable. However, those 3,200 planets are a very small fraction of the total number of planets in the universe. There are probably millions of planets in the universe that are habitable for humans, and there are probably human-like species on most of them.