From this film Iron Man 3, The Humans Living in Space for a Long Time?

Today I went to see in the Fifth Shenzhen Animated Cartoon and Comics Show, I saw many cosers, and have many Iron Man 3 cosplay, because I like Iron Man, so I have an idea about Iron Man 3. Just like this film, in 2154, the richest people live in one called "Elysium" luxury space station. A man is trying to take advantage of high society life-saving technology to save life on Earth is still suffering from poverty and disease-ridden, and help people live better.

Although this idea is too difficult to come true, but if you life in space, it is very difficult. Weightlessness makes the human muscle and bone mass loss. And the radiation is usually shortened lifespan. While the man living on Earth, the Earth's magnetosphere this radiant barrier for us.
In the film, the answer is yes, money were everything. There are devices including cancer can eliminate almost all diseases. As for the weightlessness problem, "Elysium" is a "Stanford ring." The residents living in a huge rotating wheel inside, which provides a similar gravity centrifugal force as gravity?