Hurricanes are needed: To cool the earth down by cycling the air, to break droughts, and to form coral reefs. Weather control will eliminate the need to cool the earth down, and would solve droughts, leaving the coral reef issue, which is more affected by pollutants and ocean acidification. Note that we would not to end all hurricanes. Just reduce the damaging effects of the most threatening ones. This is going to be needed for much the same reason that weather control on the whole is going to be needed. For purely selfish reasons. Fear it or not, geoengineering is definitely on the way. So hopefully it works out for the best.