That's such a great point. If that will happen, we’ll need to address issues like radiation protection, and the psychological effects that is associated with the long-term space travel. But I believe the benefits outweigh the challenges.
Elon Musk is one man who's obsessed about another planet and he's working so hard on it. It might happen sooner than we thought.
One thing I haven't heard spoken about, except in scientific literature, etc., is that 6 months in space reduces your bone mineral density by 10%. Knowing just that, you're more prone to fractions. So, we're going to need some holistic way of treating essentially osteoporosis, or we're going to become jellyfish pretty quickly. Some drugs treat it, but they're essentially steroids, which can wreak havoc on every other part of your body including liver to cardiac issues. So, there's a hurdle there that's being overlooked by just getting there.
