You asked,

Why do so many people doubt the CERN Physicists and the other people that are involved with this project want to kill us and them and their future … ?

I'm not very familiar with the reasons why people are worried about the safety of the LHC, but I suspect those reasons fall into the following categories.

1. Screeds from people like He-Who-Has Been-Banned-From-This-Site. There seems to be something about a lunatic's utter conviction and forceful personality that causes people to wonder, "But what if he's right?"
2. Honest ignorance about the level of risk involved. I used to work in development of fuels for nuclear reactors, so I got to hear a lot on this subject.
3. Honest differences of opinion about what level of risk is acceptable.
4. Honest concern that the scientists who reviewed the LHC might have allowed its almost-certain benefits to (honestly) cloud their judgment about its potential risks.
5. Forgive me, but I must say it: Recognition that the scientific community has its fair share of liars and frauds, who are sometimes in collusion with peer reviewers. The authors of this article about two cases of fraud in physics had an agenda, but the same cases were covered in The Los Angeles Times and Nature. Google "scientific fraud" for more examples.

You might ask why I'm not at all worried about LHC. I just believe that if the Doomsday scenarios were even remotely possible, some competent physicist would by now have said to himself, "It's time to go to WikiLeaks: the knowledge we'll gain isn't worth the risk of my family being done in by a Strangelet."

Medical techniques have also been the recipients of this kind of fear-mongering. Who is not familiar with the vaccination 'controversy'?

This kind of hyperbolic fear is nothing new.

People are afraid of things that are new, they're especially afraid of things that they don't understand.
When electricity was first introduced, there were actually plenty of doubts and even rumors surrounding the use of electricity as well, just as there are with the LHC.

The difference here, however, is that the LHC introduces something to the public that no one, except legitimate scientists, fully understand.
Particles, Ions, etc. you really can't expect the public, especially the average person to understand these things and because they don't understand it, they're wary of scientists messing with it.

Just like when electricity was first introduced, it was new, it was something that the public really didn't understand at the time and it was even black-labeled until it was proven useful.