If I wasn't such a long-winded character, I would concede that previous posters have dealt with this pretty thoroughly...but as I AM a long-winded ... ahem... character... I will chime with my "two cents"...
First off, I tend to agree that there is a deep-seated human need to imagine that somewhere, somehow, there is competence, strategy, foresight, etc... even if we see precious little evidence of in any of the organizations we either deal with or work for
...and even if we imagine this guiding influence to be somewhat malevolent.
Second.... I think that most of us vastly underestimate just how unlikely - if also mundane! - a good many events in our everyday lives are. Take your average fender-bender... and run the "tape" backwards... if either party had changed even one small detail of their respective days to that point, odds are they would not meet at that intersection... if you had not JUST made that light as it turned yellow, if you had taken just ONE more sip of that coffee, if the other guy had not misplaced his keys, causing him to be running exactly 2.2349748 minutes late, if, if, if....
Now imagine a conspiracy-minded analyst examining that traffic accident..and ALL the unlikely events that had to take place to bring those two cars together at just that time at just that intersection, etc... SURELY there was SOME guiding force at work, no?
I think the desire for order and meaning, and the overlooking of the many "unlikely" events and coincidences that pepper life, every day, both contribute quite a bit to the constant hunger for conspiracy theories...
Shadow