Relocation assistance != disaster assistance

Stop paying for them to keep rebuilding the house, give them the money to move.

>I know of no place on earth that is without some susceptibility to natural disaster. So where do we draw the line?

OP proposed twice, you objected. I think twice with no time horizon isn't useful. Twice in 50 years seems reasonable for someone who lives in a 100 year flood plain.

But these flood plains are growing with climate change. Storms are getting worse and more frequent. Just continuing to pay to rebuild is not the answer.