With many people these days it is hard to carry on a serious conversation, because their brains are bogged down in woo woo.
You could say why worry about peoples crazy ideas. The reason is that the world has some serious problems to be solved, and it would be nice if everyone was committed to solving those problems instead of making them worse. A large portion of society seems to be committed to pulling the rug out from under the very tools that will help us solve these problems.
Do your part by understanding critical thinking and the scientific method, and fight for these topics to be included in your children's education.
For an idea of some of the problems to be solved and the seriousness of them, please watch this video of Jared Diamond. Why Societies Collapse