Truly bizarre thinking. The mind is a very powerful thing. Thought often precedes action. This individual's self-fulfilling prophecy seems to have come true. Sad story.
I have read about bug chasing but just from the media it's difficult to know if it's widespread or if it's just journalists blowing up the stories of a few people into a trend. This guy had, on the surface, most of what anyone could want, money, achievements, a satisfying career, friends etc and yet still didn't feel like part of a wider community. It's as if being in the gay community wasn't enough so he came up with an idea of being somehow 'ultra gay' by having HIV. I agree, very sad.