It kinda forgets one very small detail.<p>Getting there is requires almost twice as much delta v as to Mars or Venus. Also, since you are going deep into Sun's gravity well, getting from there to practically anywhere is going to be very expensive. Setting a base on Mars actually helps further colonization as you are setting further from Sun on a planet with less gravity.<p>Though my understanding is that future of space exploration is going to be swarms of robotic factories that can replicate itself from minerals from asteroids.