There is no place to live that is totally safe from bad weather. It is in the best interest of every citizen of the United States to pay for climate and weather modeling as disastrous weather can have massive impact on the economy. Also, from a moral standpoint, I personally don't mind shelling out some money to try and keep people safe.
As to your point about people living in areas where weather tends to be statistically more dangerous: If the government came to your house and forced you to leave, how would you feel about that?