I quit my job to start a startup while having a family and kids and I consider it a mistake. I’m not sure it would have changed the outcome (successful exit) but it caused a lot of extra stress, and I can safely say that I didn’t quite know what I was doing and it would have been better to have a stronger plan (especially marketing), a longer runway, a more complete prototype, and more evidence of a market, before I took the leap and quit my job. All those things can be done on the side while holding down a job, even with a family. (As long as the job is closer to 40 hours a week than 60 or 70...) $1M is a nice runway, but most people don’t have that, and even with it, the more you have locked down before you quit your job, the better.