There is actually reason to do this, but only with understanding can one choose which ignorance is necessary and isn't dangerous. There are dangers we are unlikely to face, so ignoring them is reasonable, like Velociraptor hunting techniques.

Other things, like the endemic corruption of our governments, police, and the enemedia, are almost certain to bite us in the ass if we ignore them. Carlos Castaneda, in 'A Yaqui Way of Knowledge', wrote his spiritual teacher, the sorcerer Don Juan, said 'A man of knowledge chooses his folly.'

Even though this was a fictional tale, there is much truth in it.

Thanks!