For me, I have reached Trail Crest 6 times, and the summit three times (weather shortened the trip twice, and insufficient desire once). My last summit was Wed. June 20th with my daughter and a family friend. For them, it was their first attempt, and first summit. You go girls:-)
Why? You know, I keep asking myself that. It is painful, but in time I forget the pain. The views are magnificent. I do love an "adventure". Etc....
But I guess the "bottom line" is that we all like a challenge, and to achieve something "significant". After all, who wants to do something simple? Although there are several folks on this board that can make "easy work" of the climb, I think that for the most of us mortals this hike is a "significant" challenge, and being able to do it does gratify me.