Couples who have kids/families together without getting married, so that they can collect mad government benefits off of the mom staying home/only working part-time.

One thing people who moan about "tax benefits" for married people forget is that married couples qualify for very few social benefits no matter how crappy their incomes are, because the gov labels them rich for having a "dual income".

Meanwhile, these couples that act married without actually being married can completely mog the system. Wife works part-time while collecting welfare for her and the kids, and the guy goes and works/makes as much cash as he wants without it hurting their benefits, because the couple isn't married. Plus, one of them still gets to claim the kid on their taxes.

claim everything as business expense