The population is growing too fast. I'm not against growth, but it's completely unmanaged, and there's nowhere to put 225,000 new people, especially in Seattle/Tacoma. The companies that are creating the huge demand for housing (which they envision as a forest of density) won't pay taxes, so buses, roads, and essential services are completely strained. Housing that's affordable now is often under the wrecking ball and the displaced people have nowhere to go, so the homeless population is on the rise.
I could look out my office window and count 20 construction cranes downtown with little effort. We are stretched. And, by the way, there is a vacancy rate for the luxury housing they are building.
I don't see an end to this, and it's just really an awful place to live right now. New tech workers have no housing (or won't move into the luxury units built for them), poor people are being displaced, and those of us in the middle are in constant fear of rising rents and/or being evicted so they can knock down more buildings and put up worker hives.