Take-home pay is indeed higher in the bay but unless already had a family, that take-home pay is worthless in what is without a doubt the most socially dull major metro in the US.
I go on way more road trips and hikes than what San Francisco ever permitted. While SF has a few good hikes, it expensive to own a car (parking, insurance, break ins, ticketing).
Seattle has access to Canada, islands, mountains, snow skiing, and boating.
There are a lot of good things about living in Silicon Valley, so it's a bit annoying when people take all that for granted. I do miss being able to bike everywhere I needed in Mountain View. But I was happier after we left.
It’s a toxic mix that leads to a social death spiral.