I don't think the holocaust happened
Why not?
I'm pretty sure many scientists have proven by now it's impossible for this to have happened.
It's wrong to deny history.  Doing so minimizes the suffering of others.
I have never denied the death of millions, I just don't believe it that it was a holocaust.
There is no basis for the claim that the Holocaust never happened.  Actual scientists, who provide evidence for their opinions, can show you incontrovertible proof that millions of people were deliberately killed and buried in Nazi Europe over just a few years.  To continue to claim otherwise just causes pain to those who lost ancestors and loved ones.