Surely the best place in terms of hospitality is Earth. But Mars, with all its problems, is likely still second. Likely.
We can deal with all martian problems.
1. Perchlorates in the soil? You can deal with them, say, chemically if you need some patch on Mars which is more Earth-like. After al you don't need to have the whole Mars immediately fertile.
2. Low pressure? Yes, but it's still better than vacuum, so spacesuits could be simpler, and also the cold atmosphere won't freeze you as much.
3. Far from Earth so Sun is too dim for solar batteries? Then take more of those batteries, they are becoming good, cheap and even light.
4. Far away from Earth? Yes, true - but we can survive for the year to get from here to there, and we routinely had ISS missions for half a year, comparing to ~9 months flight with today's technologies from Earth to Mars.
5. Low gravity on Mars and weightlessness in flight? Some are optimistic about artificial gravity during flights or even on the surface, and if we don't yet consider permanent settlements, it's imaginable to live a couple of years in that artificial gravity, and come back in a relatively good shape.
0. Radiation? How about better shielding for spacecrafts for the flights - both using e.g. water onboard and plasma clouds around, so different kinds of radiation would be at least reduced. Just like with artificial gravity, there are much more questions than answers in these areas, but at least we have physically plausible ideas. On the surface we can use underground houses - even with centrifuges.
As for point 2, pressure on mars is a few millibars, so not even a percent of earths atmospheric pressure, way too little to simplify construction or anything
And it has 25 hours in a day, arguably an upgrade from Earth in terms of getting an extra hour of sleep. No other planet comes even remotely close to being so similar.
I still harbor resentment about being brought up in a small village without decent public transport. I can't imagine the intergenerational conflict when people raised in a sulfuric hellscape learn that there is a green earth. What kind of departure from our own cultural norms will be required to keep a Venusian society from tearing itself apart? Something akin to the difference between our society and that of the victorians?
Is exciting to speculate though :)
I think we should push some asteroids at Venus to make it spin faster. Is this feasible? Maybe hit it with two simultaneously, one in each side. Surely that would help with the temperature and magnetosphere there.
We can deal with all martian problems.
1. Perchlorates in the soil? You can deal with them, say, chemically if you need some patch on Mars which is more Earth-like. After al you don't need to have the whole Mars immediately fertile.
2. Low pressure? Yes, but it's still better than vacuum, so spacesuits could be simpler, and also the cold atmosphere won't freeze you as much.
3. Far from Earth so Sun is too dim for solar batteries? Then take more of those batteries, they are becoming good, cheap and even light.
4. Far away from Earth? Yes, true - but we can survive for the year to get from here to there, and we routinely had ISS missions for half a year, comparing to ~9 months flight with today's technologies from Earth to Mars.
5. Low gravity on Mars and weightlessness in flight? Some are optimistic about artificial gravity during flights or even on the surface, and if we don't yet consider permanent settlements, it's imaginable to live a couple of years in that artificial gravity, and come back in a relatively good shape.
0. Radiation? How about better shielding for spacecrafts for the flights - both using e.g. water onboard and plasma clouds around, so different kinds of radiation would be at least reduced. Just like with artificial gravity, there are much more questions than answers in these areas, but at least we have physically plausible ideas. On the surface we can use underground houses - even with centrifuges.