I can think of a few reasons, sadly...
* Too many worldly events to keep ourselves occupied with. Tbh, at this moment in time, I do think information related to world events, economics,
politics,... are more important than what if's, theories that we can't prove or test,... ET threads are interesting, threads about mysteries etc as
well, but when we're on the brink of war, and have been for quite some time now, they dissolve into the background as there are more pressing matters
* More and more people join the internet-population. As a result, more and more people who think they know the answer to everything, find their way to
every corner of the internet, including ATS. There is no bigger buzzkill than hypothesizing a subject and then having someone enter the thread only to
claim that what you are talking about is bs, impossible, debunked,... No no no, don't theorize!! Forget about the fact that everything starts with
theory and that many things we believe we know are all still only theories, when it comes to conspiracies, you need hard facts, POIDH as you say
* Of course the internet wasn't invented yesterday so point 1 needs some additional reasoning; Because of the internet, massive spread of information
is possible. On a daily base, people read or hear something new, google it, and come to a conclusion. Usually, this conclusion is the one they tend to
stick with. There are two sides to every coin, but for many people, seeing one is enough to know that there is a coin, and what's on the other side
doesn't matter. So they have this one-sided information, that has satisfied their craving for finding out more, and then will spread this information
when they come across something relevant. And thus even people who have been using the internet for ages, will do this, even I do it when I don't pay
* It's become almost impossible to draw the line between fiction and non-fiction. I was talking about this yesterday, in fact, with my girlfriend. We
were watching Prometheus for the first time, and I told her that, well, some of the things in the movie are not fictional at all, and what movies like
this do is they push fact and fiction together into a box labeled "sci-fi" or "not real" or whatever. Something is either fictional or it's
non-fictional, for many, seeing something that is fiction will result in it remaining fictional, no matter the possibilities, the real facts,...
* Combine the previous point with the internet and we're pretty much done. Anyone can fictionalize anything, the internet allows everyone to stumble
upon anything, a movie, a picture, a story... There are so many stories about alien abductions, for example, that are completely fictional. Some, will
undoubtedly, claim that their story is real, to get attention, to complete a wish of theirs with lies,... We'll never know which stories are legit,
and which are made up.
* Lastly, everyone has an agenda, and you nor I will ever know 100% certain what that agenda is, and if what they say it is, is true. The anonymity of
the internet allows me to claim I am a MIB who has secret documents that I can't share but want to talk about, and when an actual MIB wants to come
clean, everyone will mock him, telling Bernard to get off the computer