I love talking about specifics vs. generalized statements like "Well live somewhere cheaper, duh!" Haha!
If you want to work at a certain level in techiedom for the biggest/best/most challenging/highest paying then you need to choose one of the tech cities. The Seattle area is quite a bit cheaper all in (salary, taxes, house prices, etc.) vs the Bay area, DC, NYC. There are second tier tech cities like Austin, Chicago, Boston, Denver and so on as well as non-tech cities that need tech workers but the companies are smaller, pay tends to be lower and more importantly the market is smaller so you're much more locked in to the company you work for.
There are like Sol mentioned other considerations than pure finance, like most of my family being in the PacNW including aging parents. Also important is that my wife be happy with the environment, that *I* have close access to the mountains so my soul doesn't wither and die, and of course that there be a good environment and schools for the kiddos.
Of course we ran the numbers on salary vs. COL before we moved (it was a net gain vs where we were living at the time) and of course we did comparos between the HCOL tech towns and 2nd tier towns. We also visited some of these places because the map != the terrain. Austin for instance was eliminated that way despite being good on paper.
On Move somewhere cheaper in the area
Sol mentioned as an example Kent, Des Moines, Renton as places half an hour outside the city that have the same quality of life. I wanted to address that statement. Sol either lives here or is familiar with the area but is greatly underestimating commute times. Kent to downtown Seattle or out to Redmond where I work *IS* 30 minutes in the middle of the night. During actual commute times it's more like 50-60 minutes due to horrific traffic.
Also the schools are nowhere near as good, more crime, more noise (the airport is right there) and generally *NOT* the same quality of life. Not saying it's a horrible place to live but you are buying some quality of life with that money.
Yes we've considered moving further out to save on housing, not just south as Sol suggested but also north (Woodinville, Bothell) or my favorite east out i90 to the smaller towns close to the mountains although that will take some work for my other half to accept.
All of this just means that it's a good time to continue renting, stacking cash and waiting for when it makes better sense.