And because Thorium cannot easily be made into weapons, the military will not fund development of the use of it as a fuel - nor will it expend the political will to make the construction of a thorium-reactor possible. And so we keep using Uranium. The political hindrances of using Thorium turn out to be much greater than the political hindrances of using Uranium.
The military uses nuclear power outside of weapons, especially in the navy. Subs, aircraft carriers and the like are all nuclear powered, so they have an interest in safer nuclear power as well.
While I agree that up until now most of the developments on nuclear technologies have been funded by the military, it does not mean that a massive push by the public can't force governments to fund new thorium research.
In the US, for example, the Department of Energy's budget[0] last FY was about 5.5% the size of the Department of Defense Senate proposed budget for FY2014[1] (35B v. 626B).
