If we're going to colonize multiple planets, eventually we'll have to get over our surface obsession.

We might be able to land on some of the mountain peaks, but I think the distance to Earth more than makes up for the inability to land on the surface of Venus. Though, we might be able to have some automated mining of the mountains.

I think we should at least send more than a few floating probes to Venus. It will certainly teach us a lot about the greenhouse effect. I think we could also have at least a floating lab to learn about the planet.

The fact that you can't mine Venus very easily does mean that the majority of things do need to be shipped in, possibly with the help of mining the moon or asteroids. It is a lot closer to Earth than Mars though, so it's a lot easier to ship things there than to Mars, meaning that once we do set up mining and manufacture on the Moon, it will be cheaper to ship things to Venus.