The way I read your argument is "science is not 100% correct, only 85% correct. That means they are 15% wrong. Since science is 15% wrong and those 15% wrong will have negative consequences, we should ignore science and do what we feel is the right".

I acknowledge that science doesn't have all the answers and probably never will. However, I believe it is better to take its results into account when making public policy instead of relying on gut feeling or ideology.

I certainly hope science is taken into account when deciding things like building regulations, fisheries quotas and food additive regulations.