[MaximumYComb]

The average wage in Washington is $55k in 2018. Google L4, when I searched, is $133k. You earn 241% of the average pay and live in a middle class suburb. To me, middle class implies average. The reason you can afford to have a SAH partner is because your salary is top 10% but you live a 50th percentile lifestyle.

[CydeWeys]

I'm seeing $156k for L4 base or $266k TC. It'd be easier if OP just told us the actual figure, but either way the point stands, they're making multiples of the median household income of their area, with just one earner. And the calculus gets worse because a lot of the dual-earner households are likely having to incur childcare costs that they aren't.