In my opinion (opinion, so I could be wrong), MIT and friends offer more freedom. I have a strong aversion to the concept of copyleft and usually try to avoid

In my opinion (opinion, so I could be wrong), MIT and friends offer more freedom. I have a strong aversion to the concept of copyleft and usually try to avoid it for fear of "tainting" anything I touch after. In principle, where it makes sense, I rather like the idea of the sort of freedom claimed by GPL advocates but in practice I prefer to allow people to do whatever they want.