Is Chicago's "Tourist Bubble" Worth It?

This past week we read about how Chicago has invested millions of dollars in tourist-oriented development. Millennium Park, Navy Pier, McCormick Place, the new museum campus and the new Soldier Field-- all of these attractions have either been built or newly renovated in the past 20 years and have been moderately successful at pulling in visitors from around the world. But critics charge that such attractions are not much used by the city residents whose tax dollars paid for then in the first place. SOOOO the question of the week is: Is such tourist-oriented development worth it? Was Millennium Park worth the 100s of millions that the city spent building it? Or should the city be investing its scarce resources in other kinds of development?