I am thinking of moving to Western Washington from the Midwest in the spring (anywhere from Bellingham to Olympia), so this is something I am struggling with deciding now.
Pros
*Better career opportunities for my husband.
*Better weather.
*Better scenery.
*Real change of pace.
*More outdoor activities, particularly relating to sailing and hiking.
*Closer to Vancouver, BC.
*Opportunity for better public transport than what exists here.
*Less crime...I wish I were kidding. Crime index for Seattle was 470 with 24 murders in 2007. In my city it was 702 with 114 murders.

:
*No income tax. We have a brutal one here. I have already paid more to the state than I have the federal government and I don't expect to see more than a few pennies of it ever again. I looked at a paycheck calculator and I have nearly $250 more free a month in Washington compared to my state.
*Sales tax is only 1.5% higher than in my own state.
*IKEA is much closer.

*I may be wrong, but college and professional sports don't seem to be some kind of religion out there like they are here. Here they built a ridiculous, extremely expensive, and absolutely unnecessary temple to them that disgusts me every time I have to look at it.
Cons
*Car inspections. We are used to driving paid for buckets that would probably fail. In my state, only a few counties require emissions testing. This state has very few quality rules, believe me.
*Most everything is going to be more expensive than what I am used to paying. Rent, car insurance, food, utilities, etc.
*Traffic is terrible from what I understand.
Personally, I think other things working in our favor are the fact that we are done with having children, have no pets, have no pressing reason to stay here where we are, and are not looking to buy a house anytime soon. I also didn't realize what an impact that state and local income taxes made on my take home as opposed to a state that doesn't have them until I calculated it this morning. Having an extra $250 may not be the greatest thing since sliced bread, but it may help with the COL differences coupled with the slightly higher pay out there. Also the fact that it may be possible to be a truly one car family factors in. Here that is ultimately not possible. PT is awful.
Huh. Thanks for making this thread.

After making a real list like this, it does appear the pros outweigh the cons. Have to think about it some more though.