Reducing your sphere to only that which you personally have experience with is a dead end. We depend on others efforts to maintain the web of interactions that keep us alive & well. Otherwise we would be forced to live at a stone age hunter/gatherer level at best. Life would overall be nasty, brutish & short, and there would be a lot less of us.
What makes science work is accurate documentation of repeatable results. That cannon is essential to maintaining a functional technological society. Every member of this society cannot possibly have the ability, time & resources to verify every physical parameter that affects their well being, that is the basis of the social contract; that we all work together towards a common goal of group survival. The assumption is that we aren't lying to each other about facts that keep us alive.
Using an information resource like the internet as a tool to spread disinformation to its members is an act of aggression towards the other members, it adversely impacts overall survival. Our overcrowded hospitals and mobile morgues speak to this. Generally this aggression is initiated & maintained from outside the group under question, as it is unlikely initiators would seek to degrade their own situation.
Posts affecting others well being need to be accurate. Opinion should be stated as such. Technical questions should have source references. There is a huge difference between nihilistically recreationally disseminating about handlebar grip colours and espousing the use of "Lifetime" rated teflon brake shoes. The question you always need to ask yourself when you post is: "How do I know what I think I know?"
Zimmemr's quote "you usually get the government you deserve". { "Toute nation a le gouvernement qu'elle mérite. Literally -Every nation gets the government it deserves." ; Joseph de Maistre (1753 – 1821) } applies here. By not applying critical thinking, circulating and rebreathing non-survival pretzel logic gradually approaches "truth" if repeated enough times.
Another salient quote from de Maistre:
"Les fausses opinions ressemblent à la fausse monnaie qui est frappée d'abord par de grands coupables et dépensée ensuite par d'honnêtes gens qui perpétuent le crime sans savoir ce qu'ils font."
(False opinions are like false money, struck first of all by guilty men and thereafter circulated by honest people who perpetuate the crime without knowing what they are doing)
The sad fact here is that there are many highly educated men & women in our Senate & Representative House that objectively know better but persist out of venal self-interest in supporting falsehoods to maintain control over a body of people that refuse to look critically at what they read.