The US is a large place, you can save money for a decade in one location and then use that $1-2 million you built up to move somewhere cheap, buy a mansion and not give much a shit for the next 40 years. Taxes are also generally lower so you keep more. Healthcare costs don't matter since your employer pays for that and gives you good health insurance. School/child only matters later, and you can either move away by then or get promoted to making $600k+.

edit: Two engineers together can make $700k+ which is $450+k after taxes per year. After one year and reasonable spending that's enough for a down payment on a house in the Bay Area. Every single year you get enough to pay for 1.5 kid's worth of college education at a top private school. Very few costs actually matter in comparison at that point.