The Washington Post has a good article on folks giving up on the high price of housing around here and opting instead to live aboard boats. (Full Disclosure: I used to represent Gangplank Marina)
Its a good article and worth perusing. When I was in high school a friends mom dated (and still is) a hippy college professor type who lived on a big old boat just under the Brooklyn Bridge. He had a tremendous view, that would have cost him millions if he lived in one of the co-ops in the area - and he had lots more space. We spent a lot of time there, getting ready for nights out in the city that never sleeps and reconvening as the sun came up. It was a good time and he could live like a millionaire on at lot less money.