The Jewish people can do a lot of good if we stay united and strong - Israel and the Diaspora working together. If we don't, I always worry about the continuation of the Jewish people in Israel and abroad.
In my 40s - when I was giving to the Red Cross, United Jewish Appeal and other charities - I said to myself, this is all well and good, but these are really amorphous things, and maybe there are some causes out there that I really give a damn about.
Across all religions in the United States, people 18-30 are more spiritual than before, but they don't like organized religion. What sets Birthright apart is that no one's hitting on you to be Jewish in any particular way, and you can define Jewish any way you want.