One huge problem with Venus, even if we could &quot;fix&quot; the atmosphere, is that there&#x27;s no working plate tectonic system. It&#x27;s hypothesized that the build-up of stresses actually leads to the crust liquefying every couple of hundred million years. There&#x27;s also the slight problem of the Venusian &quot;day&quot; being 116.75 Earth days (compared to a year 243.69 days long). It&#x27;s not tidally locked but there are some pretty fierce winds in the stratosphere (at ground level the atmosphere is so dense -- 92 bar pressure -- that wind speeds are on the order of 1 m&#x2F;s).<p>Next, there&#x27;s a huge amount of heat trapped in the atmosphere. &quot;Fixing&quot; it isn&#x27;t just a matter of dumping comets full of water into the atmosphere, there&#x27;s the slight matter of Venus being a whole lot closer to the sun that Earth, and receiving a much higher level of insolation.<p>All in all, the lack of a magnetic field is relatively minor compared to the other issues.<p>Flip side: Earth atmospheric gas mix at STP is actually a pretty efficient airship lifting gas on Venus and would provide about equivalent lift per unit volume 30-40km up in the stratosphere as hydrogen provides to a terrestrial airship at sea level. (In other words, you could in principle build a zeppelin where you could walk around inside the lift cells of in shirt sleeve conditions.) And there&#x27;s still a chunk of atmosphere above that to provide radiation shielding. So a human &quot;base&quot; in the Venusian cloud tops is conceivable, albeit technically challenging.