A Regression of Thought?

I've observed a trend in our culture in which people tend to avoid all disagreeable individuals and ideas. Sadly, we've become so hypersensitive that our ideas aren't challenged. In social media, we "block" or "unfriend" anyone who disagrees with our views in the name of "cleaning up our friend's list." In daily interaction, we tend to avoid deep discussions on anything of real value. While it's...