While I definitely see the value of learning, I do believe that every young person in Israel should be required to give back... Personally I think that bachurim should serve the country for 5-6 years during their bein hazmanim (in av and Nissan), and that both be in hazmanims should be extended a few weeks so they end up serving for 2-3 months of the year. It doesn't have to be in the army (that would be difficult because of the training), but working in hospitals and other governmental establishments would be sufficient.