I notice that general vocabulary has a lot more value judgement in it. Most of this is likely due to descriptive, value-neutral words being generated every time there is a new thing to describe, whereas new good or bad properties are rare (or, at least, rarer: see hacker jargon for an example of specialized vocabulary with lots of value judgements, yet even more value-neutral words). I suppose another effect is that, when not thinking deeply about a problem (and thus not creating jargon), it is convenient to rely on general good/bad feelings about things.