Hate to break it to all those people saying that we shouldn't help those that build along the coast due to natural disasters but it doesn't matter where you build on this planet...every single spot is subject to natural disasters. Tornado's, hurricanes, earthquakes, electrical storms, blizzards, sand storms, tsunami's...these are all a part of this planet and at least ONE of them will hit in your area some time or another. The only way that you're going to escape these things is if you build a space station and live on it. Course then you're subject to solar storms and meteorites.
Yes the government should help in disaster relief. Serving the people is one of its primary responsiblities.