That same level-headedness and sense of responsibility can be a liability when it comes to startups. Most successful startups are insane when people first start working on them; if they weren't, someone would already have done them, and the market opportunity would be filled. (I had a Boston-based mentor who's already had two successful exits tell me once, "The only startups I've ever seen succeed are the ones where some engineer figured they could do something thought to be impossible.")
It's very hard to justify devoting years of your life to working on something believed to be impossible or a waste of time if you have a family to support, and a deep-seated belief in using your time productively.
So I might phrase it as "the Midwest is a great place for a startup to grow in" because what you said about families and startups is very true. When a company is ready for steady loyal employees, they can come to the Midwest and find them. As many companies are starting to do.
It's very hard to justify devoting years of your life to working on something believed to be impossible or a waste of time if you have a family to support, and a deep-seated belief in using your time productively.