Earlier quoted context omitted.
Whenever I find myself having similar thoughts I reread Willa Cather's story, "Paul's Case", here's the relevant part, the very end: "He stood watching the approaching locomotive, his teeth chattering, his lips drawn away from them in a frightened smile; once or twice he glanced nervously sidewise, as though he were being watched. When the right moment came, he jumped. As he fell, the folly of his haste occurred to h…
Okay, so the last few years I've had time and means to travel, and I'd like to comment somewhat on a perspective I gained while doing so. The list you gave- I've done all of those things. Well, change Machu Picchu to Pompeii and Somalia to the Congo. I realize your list was not comprehensive- but let me realize the spirit of your post and say I've done a large subset of the "things I'd like to do before I die," save…
On the other side, I've almost if not completely become an atheist at one point, and even then I realized that suicide was too final a choice for how little I knew about reality. In fact, atheism also consoled me, in that the thought that nothing lay beyond death meant I needn't fear death, nor anything in life, at least rationally (instinctual fear remains).
Finally, starting from an atheist perspective, that I didn't need to fear life, I realized I was searching for something that I haven't found yet, and that is a large part of why I've felt bad. Suicide again was too final and inadequate an answer to that desire inside of me. My desire and ignorance of reality give me hope I will find what I am seeking, and even the seeking is fulfilling to a degree.