Re: What would you do without "them"?
You would be better able to concentrate on that question, IMO.
You would still have plenty of opportunity to analyze cause and effect in other areas of interest or concern. That is really what it is, rather than blame/hate/polarize.
They go round and round whether we chat about "them" or something else.
Not necessarily. Binary thinking leads to the oversimplification of duality. Examining our world is not fretting, IMO.
Another oversimplification. They are not empty inside. They lack a few key characteristics that normal people have, but other than that, they are as richly textured as we are.
Sociopaths are good at doing this, but the results are not good.
I don't have any objections to imagination, new ideas, or starting now, given the right intent. I think we start when we are born, and finish when we die, but I could be wrong. I even hope I'm wrong.