No-one is “colonizing space”, you’re just being conned by a man who figured out he can make a lot of money by convincing people that such fantasies could be real.
The US spends up to $4 billion a year just to keep a few people alive on the ISS. And they can’t stay there too long because it’s too dangerous to their health. The idea that we’re going to “colonize space” in the foreseeable future is laughable.
Sending robots to space is still a form of building presence there. Not every colonist has to be a human. In fact, they are probably coming last, into pre-prepared positions and bases.