Brian,
Problems like jailing people for weed are likely to be fixed on this planet before people are forced off it.
If in the future, a single microbe-sized replicator can use asteroids and sunlight to convert itself into a planet-sized cloud that launches itself towards Earth, consuming everything in its way, then don't you think a little bit more civilization-wide scrutiny would be required?
I know it sounds like a moral question, but it's actually a technical question: in the future, can one unwatched person do enough harm to ruin it for everyone? If the answer is yes, then transparency and oversight will be necessary. It need not be oversight in the sense of a police state, but a barely noticeable background intelligence watching things.
I'm not advocating a Sysop per se, but just a
singleton, which is a certain type of social structure.
As I've also argued on my blog, people stuck in space will also be frozen in time and alienated from all culture, because us Earthies will accelerate our cognitive speeds many millions of times over, while space pioneers remain static. Eventually, you will just turn into stationary rocks in our telescopes. Of course, from your own point of view you will be traveling... but missing out on the opportunity cost of fun here on Earth.
I am anti-tyranny, when tyranny is defined as noticeable inconvenience and repression. Was it tyranny when you were forced to go to medical school in order to earn your M.D.? The sort of oversight I am talking about is very innocuous.
Speaking of Leary, the guy knew all about cryonics but still chose to die for good. For this, he is a hypocrite. (Though I support his push for the legalization of psychoactives.)