Hi again,
Yes, I think space exploration is necessary and useful for mankind when it has scientific aims. For example Johannes Kepler and his colleagues Nicolaus Kopernicus and Tycho Brahe studied planets in the 16th century and their investigations have been very important to us during hundreds of years.
Actually I do not believe that we will find the same kind of life on other planets as we have on Earth. Other planets are too hot or too cold for living. Of course, there can be some plants living and perhaps some animals on some other planet. It would be nice to think there are living persons very far away but however I do not believe it.
Scientists have done research for hundreds of years and they have not found any planet similar to Earth. Some planets appear to have similarities with Earth, for example they orbit some star the same way as Earth orbits the Sun or their surface temperature can be suitable for life but nothing more.
Sometimes I think if we destroyed our Earth, we would find another planet to live in order to continue our greedy manners but it is not a nice idea.
I have seen some films about communities living in space but I do not remember their names. Many films about space exploration have been made as well. Some of them are very fascinating. However they are not my cup of tea.
I am not sure if space tourism is a good use of money. Again we must ask for a reason for it. Scientific research is very useful but perhaps space tourism does not fill this criterion.
Best regards
Take care
Maarit