hope: anticipation v. expectation

Barack Obama based his campaign on it.
It's used in religious sermons, on the Oprah show, in therapy sessions, welfare departments, schools and on t-shirts, bumper stickers and so on.
The word is defined - according to Mirriam-Webster - as 1. to cherish a desire with anticipation, 2. to desire with expectation of obtainment and 3. to expect with confidence.
I am curious when/where the expectation came into play on this word, as its original definition only links it with anticipation. Anticipation is a far cry from "expectation of obtainment" and "expect{ing} with excitement". This wording change is bound to cause disenfranchisement with hope's purported positive impact.
And why?
As we Americans are apt to romanticize the "good old days." That being said, my gut instinct tells me my grandmother, if given a multiple choice with these three definitions would choose the first; my sister, the second or third. One wise theory I've subscribed to in my twirties is that these multi-generation gap-sters (baby boomers, mainly) have contributed to the near-extinction of personal responsibility.
And this may be the gray area where new definitions were fostered.
When "expected," hope puts the impetus for change on the object for which the person is hoping.
"Anticipation" has no such context; its meaning allows room for a significant amount of personal responsibility.
So let's hope this younger generation (myself included) takes a stake in our responsibility and assists president-elect Obama in rocking the American political boat. Just as we did with the 2008 presidential election, we must continue to demand what we want from our elected officials, federal and state policy and the laws that govern this country. It is ours to inherit, after all.
That's my hope for the future.