Please complete the discussion

In the wake of the 40th anniversary of man setting foot on the moon, there has been renewed interest in space exploration.  Proponents argue that in addition to working toward the actual objective, numerous and widespread “spinoff” benefits will accrue.  Others argue that space exploration is “not worth the cost” and that our resources could better be used to deal with other issues such as health care, the economy, etc.  What do you think?  Is space exploration worth it?  If so, what benefits would be derived.  If not, why not?