And of the people that live there, not everyone lives there because they CHOSE it. Not everyone has the ability to up and move to a newer, safer city simply because they're worried about floods.
It's just not that easy.
So, given that cities ARE built on flood plains, and that flood insurance IS refused for those people that live there, what are we going to do? Abandon them entirely when a flood happens?
Good luck with that. What do you think will happen to the government that says "too damn bad, you should've moved?"
By the way, if you think Winnipeg is 'beach houses for the rich,' dude.. yeah..