Bravo! Very well said! Though speaking for myself, I travel in the mountains not so much to conquer them as much as to engage nature in a manner in which my safety depends on my judgement and subsequent action.
For me, the notion of "conquering," with its implication of victory over, does not adequately acknowledge the fact that successfully meeting a goal in any hazardous environment is at least in part of matter of luck. If effort and skill meet favorable conditions, we bask in success. If effort and skill meet extreme conditions, we use judgement to decide whether to go forward. If we go and succeed, in our minds eye we are 'tenacious.' Others may see us as 'courageous' or 'stupid'. Going forward into the blizzard can also lead to our untimely demise if all the little contingencies stack up against us.
I go partly for the opporunity to make those decisions and manage my response to those contingencies. Most of the time, I operate well within a comfortable margin of safety ("live to wimp again")- and reasonably able to handle the "stuff happens" scenarios. But the charge comes from judging the factors that provide the margin.
It's almost cliche, but the 'situational awareness' that defines safety also super-charges my sensitivity to beauty. Ultimately – I go to fully, deeply notice the play of light on the hills and wind in the grass. When I successfully 'plug-in' there is a spiritual connection that fuels happiness for months or even years. I have a memory of a cold wet day on a river in Maine, kneeling on the shore of a rapid enraptured by the way tall grass nodded when hit by rain drops. 20 years later and I can go right back. That's the real 'why' for me. I've never found anything that expresses it better than the "navajo prayer" –
With Beauty before me, there may I walk.
With Beauty behind me,there may I walk.
With Beauty above me, there may I walk.
With Beauty below me, there may I walk.
With Beauty all around me, there may I walk.
In Beauty it is finished.
As far as the ethics of the specific situation on Everest, I think it wise not to judge. The first thing that emegency response folks learn to do is assess the situation before attempting the rescue. While the scenario presents a picture that seems heartless and unethical at face value, it is one that is based on written accounts that are at best incomplete, about an environment that is difficult to imagine if you haven't been there (I have not). If rescue was possible and climbers went past because they cared only about their $60K investment, may they roast for eternity. It sounds more likely that successful rescue was all but impossible and the attempt very dangerous, and they exercised judgement in a difficult situation.

