Most of us that are younger than the Boomers or maybe Gen X don't want to count on Social Security because we've been hearing our whole lives that Social Security is on the chopping block because the government is in so much debt. And at this point we kinda just expect that ladder to be pulled up behind the Boomers before we get anything, because that's already happened in so many other areas like home ownership.
I also think people need to remember that Social Security is their own money that they paid in over their lives, and they are owed it back.
And also that even though the US government has a large amount of debt, we've also spent the last 50 years giving tax cuts to the rich, we'd probably be just fine if we went back to a 90% marginal tax rate on the top earners like we had in the "good old days" of the 1950s.