I guess what I really wanted to say was that I learned a lot more from the differences than the sameness.
The problem these days is that the differences are basic perceptions of reality at an order of magnitude above ordinary differences of opinion.
I put this as a result of easy internet "communication" and the willingness of many people to lie and twist facts and information with no ethics or conscience, while refusing civil discussion.
Also, on the internet, it is very easy to spout off anything with no accountability, especially on the discussion-less opinion formats. There is apparently a deep seated need in humans to spout off, though in non-virtual settings manners and respect have customarily provided moderately effective sideboards. But certain characters in recent decades (Limbaugh, et al.) have sanctioned the shedding of 'political correctness', which, when combined with the anonymous freedom of the internet, has encouraged rudeness and shouting at one another.
One of them, Donald Trump, decided that he could run for President in that vein. It is disturbing that he is having so much success at it.
In actual discussion where differences of opinion are the subject, any resolution is grounded in facts. If there is a difference of facts, then that must be the core of the discussion until the facts are agreed upon. Opinions without facts are not discussable.