I prefer to only have as much stuff as I can fit into my car. I could grab up the near-essentials (important papers, notebook pc and some clothes) within a few minutes. Where I'm at I don't really even need a car or computer, as the town's so walkable, and there are plenty of accessible computers at the various libraries.
Right now my main piece of furniture is a bookshelf which I'll be leaving behind. My bed is a floor cushion. I've been selling off some of my books that have held or increased their value well, and will likely be giving away quite a bit more soon.
We have something called the "Really Really Free Market" here on the first Saturday of every month, where people bring nice items that they no longer need. There are also free lessons in a number of things. This month a girl gave a free class in self defense and next month I may be giving massages.
While I'm young, it's simply more convenient to be able to fit my most valued possessions into a backpack, and move freely with the wind. Someday it'd be nice to have a garden again though, and I'd be quite happy to have my bed in a few years be a flotation tank