RE: there's a lot....
Ehm,.. Grikath,
Coming from the same place, I happen to have some insight into the cost of effort to keep those polders from flooding and the expected rise of those cost due to climate change. Now fortunately our fears of the speed of sea level rise seems to have been over estimated earlier, but we all know that if a Hurricane of type Katrina were to hit our area, some 60% of the country would get soaked and some sadly ignorant rants would drown in their polders.
Some seem to have forgotten why we build all those sea defenses in the first place and why we upped the ante after 1953. I would suggest you take a close look at the map of our country and start to wonder why all the big gaps are in it. We're far more worried about having more extreme weather patterns that are a result of climate change. Once in 10.000 years can be tomorrow as well, just like the chance of throwing a six on a dice is only once in 6.
Maybe you and all the deniers here should get their heads around the idea that science is increasingly convinced of climate change and is finding explanations for the counter intuitive effects global warming has on local weather patterns. Or you just eat your hot soup without blowing over it? See, science made easy to understand for you. Hot air transferred from you to the surrounding area to cool down something warm. Man made climate change in a nutshell.
"Beter te hard geblazen dan de bek gebrand." Is what I'll add to that for you.