Ok.................................Getting back to reality, JFK died because Johnson basically put money on his head and wanted to be president, so you didn't know that, to think , is Area 51 real?
Actually, the theory that LBJ was behind Kennedy's assassination is one of the most common, and personally, more credible ones. However, there's no proof. Granted, it makes sense in some areas, but there's no proof as of yet that it's true.
Also, there are other theories that state Kennedy was assassinated because certain people, in some theories those people were in Washington, in others just some radical nutjobs, simply didn't want a Catholic as president. However, I don't think those particular theories are very well known. I can't remember where I had heard the theory to be perfectly honest.
But, it's also very possible that members of both parties had him assassinated, for whatever political or personal reasons they had at the time. It's also possible that the Russians could have had him assassinated, or some other enemy nation at the time.
Many things are possible. Unfortunately, we don't have concrete evidence of what's actually true. Although there are some that believe that there was a lone gunman acting on his own as history has recorded, and there's nothing wrong with that to be perfectly honest.
But there will always be many who doubt it was so simple as that.
As for Area 51, I do believe it exists. But that's a belief rather than a hardcore fact, unless of course you know someone who currently is assigned to Area 51. But if you do, and you state you do, you run the risk of government involvement in the most negative ways cause they'd want to keep that covered up as much as possible. Why else would they go through so much effort to make alot of Area 51 believers seem like screwballs that speak to God on a ham radio that doesn't work.