Do you think humanity will ever create colonies on the other planets (not just couple of trained astronauts but a civilian population in a city or something similar) and depending on your opinion why not / where and when do you think they're likely to be created first?... also will the frontier of colonising be in our own solar system on Mars for example or on some exoplanet
Yes humans will be able to colonize planets in the far future. In the near future Elon Musk is planing on colonizing Mars in 2025+(so i've heard). If he is able to do so this will be a great step in the expansion of humanity in the galaxy. We probably have to create stations on Moon to make future flights.