Based on the experiences of people I know who do hospice/palliative care few people want to die, and very few people accept it easily. Accepting death is a very time consuming process for most people - look at Oregon's assisted suicide law and how few people who know they will die choose to end life prematurely. Every day matters.
It's the young who accept death easily, perhaps because they don't know all life has to offer yet? I don't know, I do believe strongly that given a chance to live another day, and possibly climb another route most people would answer yes immediately. Perhaps many wouldn't regret the path that led them there, but few wouldn't change the last days.