The Northern onslaught upon slavery was no more than a piece of specious humbug designed to conceal its desire for economic control of the Southern states.
Upon the whole, therefore, she found what had been sometimes found before, that an event to which she had looked forward with impatient desire, did not, in taking place, bring all the satisfaction she had promised herself.
There is the desire of a consumer society to have no learning curves. This tends to result in very dumbed-down products that are easy to get started on, but are generally worthless and/or debilitating.
For if you know what you want, and will be content with it, you can be trusted. But if you do not know, your desires are limitless and no one can tell how to deal with you. Nothing satisfies an individual incapable of enjoyment.
Macbeth's deed is done in horror, and without the faintest desire or sense of glory- done, one may almost say, as if it were an appalling duty; the instant it is finished, its futility is revealed to Macbeth as clearly as its vileness had been revealed beforehand