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There could be some breakthroughs, however, space travel is still a matter for the distant future (with the current known technology)

No I think this will take more than 100 years. I recently found out that some of the ISS astronauts already got more than 20% bone degredation in less then 6 months. This needs to be overcome in order to stay healthy

I think within 15 years Elon and the Space X team will have made humans interstellar beings, meaning we will have successfully put people on Mars. I don't think it will be the norm but it will at least be a reality that living on Mars because something possible.