Yes there are things I am suspicious of such as emails from Nigeria saying you'll be given lots of money, miracle cures...
The problem that makes the Kennedy assassination conspiracy dubious is the quality of the evidence. It has the same value of evidence as is used to disprove the Apollo Moon landing and prove chemtrails, etc. contrived and pulled out of thin air. Oswald may have had some help, been goaded, by outside parties, but to date there's so solid evidence that's true. If it was a conspiracy, it is a conspiracy with a small "c".
The two questions I don't see being asked are these.
1. Why do I [insert your name] have such a difficult time believing one man could have kill JFK?
2. Why do I [insert your name] feel it necessary to go along with the its a conspiracy?