There seems to be a pattern of interest in the phenomenon that peaks every 10-15 years with each generation.
We saw UFO Cults
popping up mainly in the 50s and 70s.
Note; there are some organizations like the Billy Meier cult, and more loosely New Age Associated groups attached to personalities like Steven Greer
not listed in the link.
These waves of interest seem to also coincide with interests in apocalypticism.
In times of perceived global stress, we get the "any port in a storm" mentality where interest and renewed observation of religion, spiritual
practices, metaphysical interests, and UFO/Aliens climbs where the common denominator is a hope or desire for Intervention, whether divine,
supernatural, or technological to come save the day.
Just recently, we had the 2012 Apocalypse.
After that amounted to essentially nothing, with no UFOs showing up at the Olympics, No UFOs showing up unambiguously really anywhere, and no great
change occurring, the reality of the "Coming Soon" mentality proving false begins to set in.
There's only so long people can hear "Coming SOON!" with nothing ever happening before they grow tired of it decide to focus their lives on they
find more meaningful and immediately rewarding.
This, of course, applies primarily to the magical thinking trend crowd that falls for the Fabricated mythology associated with the UFO phenomenon.
While there is a genuine UFO phenomenon, we still can't quantify it entirely. This frustrates the casual enthusiast too.
It's frustrating over time as well for near every report that pops up to be readily and quite thoroughly identified as a missile launch, balloons,
chinese lanterns, birds and bugs, ice particles, CGI, LED kites, skydivers at night, the typical misidentified stars and planets, solar balloons,
satellites, and regular aircraft time and time again.
Where are the flying Saucers of yester year?
Until we know, we won't and for most people, there's much more immediately rewarding pursuits on offer than an interest that never pays out.