> fully understood the challenges they'd face to get their companies off the ground, they would never have pursued it What kind of challenges is that? I'm genu

> fully understood the challenges they'd face to get their companies off the ground, they would never have pursued it What kind of challenges is that? I'm genuinely curious. I don't particularly see the job of an entrepreneur as difficult. Not in the sense that it's easy to be successful, but in the sense that it's laborious, painful, sufferable, miserable, relentless, etc. For example, I'd consider medical surgeon a pretty difficult career. Years of study and practice. 24h+ shifts. Dealing with life and death on a consistent basis. So I'm interested what are the kinds of hardships faced by entrepreneurs that get them to say that?