Yeah, this may be a problem for many of them. I do have some sympathy towards my young brethren, as it can indeed by difficult to save once you out of college. Here are some factors that they are facing.
a. Living on their own for the first time (wasn't easy for me).
b. Trying to find a job
c. Student debts
d. Lifestyle influences
That said, they can make their own priorities. I do go out from time to time, but I am very keen on cutting my expenses down as much as I can. I have had some great advantages early in life that have made it easier for me to save, such as saving on rent by living at home for a few years, but there must be a habit of saving/investing, once you get that, it will be so much easier for your entire life.
While it is easy to neg the 2% savings rate, if it means that people are investing, hopefully it will be a positive sign. Many are amazed to hear that I plan on retiring in a decade, until they realize that I have been saving for many years, and that they can do it too.