Americans: stop making houses off wood !

[Godefroi]

http://www.liveleak.com/view?i=e4d_1385094030

Is it a long tradition or something ? Looks to me you could us a bit more concrete over there! Maybe I'm mistaken but USA is the continent most affected by tornadoes. It must seriously suck to have your house destroyed like that :/

Also, is having a shelter mandatory? 'Cause it looks like this couple wouldn't have made it out without it.