There's a lot of trivial details in this first post I realized as well (and I'll go into the main stressors later), but I definitely, agree with you. I think Marc Andreeson really hits the nail with this post: http://pmarchive.com/guide_to_startups_part4.html
Ironically, once a startup is successful, and you ask the founders what made it
successful, they will usually cite all kinds of things that had nothing to do with it. People
are terrible at understanding causation. But in almost every case, the cause was actually
product/market fit.
I'm trying to avoid this.