Know several kids of divorced parents and the parents figured out that If they just lived with their fiancé and not married that the kids get to count whichever parent they choose for things like reduced lunches, health care, FAFSA filings and such and typically max out government payments.
Don't forget child tax credits, that's real money in your pocket. Unless you make maybe $200-300k+ combined, you are WAY better off not being married in terms of benefits payments. Once you get up to that high range though, then the tax savings outweigh the benefits.
And now back to our regularly scheduled NIL apocalypse coverage...