How do you classify by what you observe as reality, and further it could be true?
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If individuals realize and take actions to stop climate change, we are good to go for it.
Kinetic gun type launch is great for transporting materials from earth to within our solar system, we need methods for either the best method that is best suitable for humans to travel in space or humans must adopt to harsh traveling methods.
Yes, we have to (individually) contribute to stop climate change, but also should not be on a single planet's climate, etc.
That's why we have to create a space colony and make multiple planets suitable for life. We cant depend on a single planet's climate, etc.
"There is nothing we need to invent to be able to start a permanent human presence outside near earth orbit.Transport. Life support. Communication. etc" It is not just about 'Transport. Life support. Communication. etc', its about the fuel efficiency, the ability of humans to sustain in space, the ability to have great volumes of food, devote great time and risk, engineering hardships, etc. "there are so many issues that need" attention on earth is another matter. Can you specify?
Can you elaborate on "We have the tech to colonise the solar system now."
What if our assumptions could be false? What gurantees it be truth? Or in other words, why it shouldnt be false?