The reason K2 was his last climbing expedition was because he refused to help those dead and/or dying. It was well known after that, that he was completely untrustworthy as a partner.

And naturally, later in the occult, he would leave people shattered after using them up. He had no regard for most humans.

In his latter part of his life, he does talk of the thrill and live of life, and what he had missed. I've held those letter in my hands, penned by his own hand.

He may have been called the wickedest man alive. I pity him.