I agree. When we're talking about a rather popular figure like JFK, a lot of people want to believe that there's some sort of conspiracy. They just find it hard to believe that one man acting alone could do such a thing. I, on the other hand, can understand that it's not so farfetched to believe in a lone gunman. I mean, look at the guy who tried to assassinate Ronald Reagan in 1981; the only reason he wanted to kill the president was because, in his twisted mind, it would impress some Hollywood actress. That just goes to show that when it comes to assassins or would-be assassins, a lone gunman is usually all there is, sometimes for reasons that can be hard to understand.
Interestingly, I happened to watch something on TV last night about presidential assassinations, specifically things most people don't know about. For the Kennedy assassination, it turns out that, in a way, there actually was a little bit of a conspiracy, thought it seems to have been done after the event. Apparently, the KGB forged a letter that appeared to link Lee Harvey Oswald to the CIA, in an effort to get Americans to distrust their government. No actual involvement, just taking advantage of a tragedy. Now that was certainly something I didn't know about.