I just Googled "addiction", and guess what -
Ahhh, my literary hero Joe Tasker has more on that:
Now I had come to know that I would not stop climbing; this mountain scene was exhilarating rather than oppressive, full of endless opportunity. Sometimes I feel as if the mountains have become an addiction, the pleasure gone, the compulsion to partake remaining.Joe Tasker,
Everest the Cruel Way page 118
Harvey