Edit window has elapsed on my other comment, sibling to this, so I'll add to it here. I've been through a very tough, life-consuming job before. I founded and

Edit window has elapsed on my other comment, sibling to this, so I'll add to it here. I've been through a very tough, life-consuming job before. I founded and ran a startup that would take nearly $200m in funding and grow to around 80 employees. During the ~5 years I was involved in that my kids were born, bought and maintained a house, and other such life epochs were passed. It was insane... working 80 hour weeks, traveling every other week, and working equally long hours when away, always feeling like I wasn't doing enough. I only realized how messed up this was when I was packing to leave again, and my 4yo asked "Why is Daddy leaving? Does he not like me?" On the plus side, being a startup founder is why I'm now financially independent. But I wouldn't want to put my family through that again. So I've heard that getting a PhD can be a brutal experience... but I wonder how bad it is in comparison to the hustle of a startup. Still I imagine that it is a different kind of work and will take some getting adjusted to. And it is usually not something that can be restricted to the usual 9-5. So that's part of why I'm looking at doing a "part-time" PhD program, although I won't actually be doing another job on the side.