Suppose I want to hire you for a few months. You tell me you will be traveling in Vietnam, Cambodia, Laos and Thailand for 6 months. You tell me you will have access to the internet and work while on the move.
I would think you're not committed enough. I would also worry that you may get your laptop stolen with proprietary data on it while on a bus trip through the Cambodian jungle. And I am worried that you will have trouble accessing the internet in some remote locations, which would cause you to miss deadlines. To cut a long story short, there are too many risks. I would be better off hiring someone else.
The freedom would be great. Everyone would love to have the freedom to travel around. That does not mean it's not a fantasy.
Why not travel around and do rentacoder.com programming gigs once in a while?