Why?
The public schools have been teaching stupidity for decades.
The mainstream media has been pushing this crap on the public for decades.
If you don't believe this crap and you talk about it you are ostracized and maybe screamed at.
The believers in this science fiction can be quite emotional when those beliefs are challenged.
I have been challenging this crap in public for a long time and I can tell you I have brought several to the point of rage and close to violence.
yeah