Eh, the JFK assassination is more people wanting a conspiracy over the boring explanations rather than an unsolved murder.
Personally, I remain agnostic but find it fairly credible that Oswald personally met a group of conspirators from the CIA a few days before the shooting and these people encouraged him to do what he did, maybe even made him some false promises about what would happen afterwards. It's also not unlikely that the killing of Oswald himself followed a similar pattern.
That's all speculation, but overall reasonable speculation, because of the existing motives. Many conspiracy theories are weak, because they fail to lay out a credible motive. JFK is not one of those cases.
for a more realistic view, see the interviews with LAPD people from the recent documentary on Bob Kenedy's assassination in LA.
it makes the case pretty clear, and show that people did talk. but that the good media, not wanting to promote conspiracy theories, silenced. The guy was pretty much boasting about his participation for decades and nobody cared.
The severe weakness shown in the Bay of Pigs debacle, an Eisenhower scheme he utterly wrecked by moving the location as well as the last minute denial of air support, directly lead to Khrushchev's nuclear missile adventure in Cuba. Which led to the closest the world has ever gotten to nuclear war, Soviet subs were under orders allowing them to use their nuclear torpedoes if damaged, and one captain decided this was a case but the decision required three officers, one of whom declined. (This ultimately resulted in Khrushchev getting sacked.)
There's lots more, but it's also worth mentioning that just a month before he was assassinated, he went along with his Best and Brightests' scheme to depose and inevitably assassinate the President of South Vietnam and his brother, which ruined that nation's officer corps and any trust they had in us, which led directly to our having to replace them with our own forces, and the nightmare that followed. LBJ's prosecution of the war was downright criminal, but at the highest level moral, he acknowledged the "you broke it, you own it" principle.
But one could see members of the Deep State deciding that JFK's assassination of an ally President made him fair game for assassination in turn. And for all they knew necessary to save the nation, he'd been reckless all his life, succeeding in starting WWIII given another 1-5 years was entirely possible.
It means that people become so obsessed with "critical thinking" that they will never be satisfied. Every group telling them to let it go becomes just another brick in the wall of conspiracies surrounding them. Every shred of evidence just invites more questions about who faked it and why.
It's interesting to speculate on the motives, although somewhat mood. Some people probably enjoy just the thrill of thinking about these. Quite possibly, we have some circuits that engage in such speculation, and they do serve some purpose: After all, sometimes they really are coming for you. Maybe the ability to associate only with others that share your fantasies today is the real problem, because the trait itself evolved in times where it was kept in check by your immediate peers, whose rolling eyes would at some point get you to shut up.
This is rather detrimental for society because we no longer have any trusted sources of truth all sides of an argument agree on. Was the economy improving during Obama? "No, all those statistics are fake!" Is the economy continuing to improve? "No, the new guy is now faking the statistics!"
JFK, Area 51, Club 54,... these things have now thankfully passed the threshold of relevancy. But the problem is larger than ever before.
Yeah, that is "freedom", in some sense of the word. But people aren't actually using it to critical think about anything. They see it as license to choose the facts they believe and ignore those that are inconvenient.
A skeptic evaluates the evidence, and believes what it tells them.
A contrarian rejects the official narrative, and works from there.
The problem is that their version of "critical thinking" leads them down extremists rabbit holes like the ones which begin with listening to Alex Jones and ending with them trying to kill people at a pizza place because of purely imaginary Satanic pedophiles.