Very interesting question! The OP has several other fun thought provoking questions, such as the possibility of using nukes to reduce greenhouse gasses. A hilariously morbid one, posits the idea of drastically reducing the cost and complexity of space exploration by only sending human heads kept alive by onboard devices. The OP figures most of the engineering difficulties centers around accommodating a full human body, requiring a significant amount of mass and infrastructure to support it. If a body is needed at the final destination, one can be grown specifically for the environment. It's no more far fetched than cryogenics.