It has its' downsides like any place but I love almost everything about it here. My wife was actually born and raised East of Seattle (Mercer Island) so her family being here and my girls able to grow up with their people is cool, but Seattle definitely isn't for you if you aren't making a certain amount of money. Me & my wife combined bring in right at half a mil after taxes, but we also have three kids, two of which attend private school and have expensive hobbies, which isn't cheap. We also chose a relatively expensive neighborhood for the gated community and low crime rate, so the mortgage is real and the groceries add up, too.
If you're single with no kids but want to be in relative reasonable proximity of the city, definitely look into moving north (Everett, Shoreline, Lynnwood, Mill Creek) or south (Renton, Tukwila, Burien) of Seattle to save yourself some COL. South is typically noticeably cheaper (Burien is going up, though) but I prefer north personally. Keep in mind, coming from ATL, none of these places are cheap, just more affordable than Seattle proper. Avoid east of Seattle past Sammmamish unless you're MAGA, in which case youll be right at home. It's like stepping into the Upside Down if you're living on the West side.
Traffic isn't as bad as Atlanta's on its' worse day, but you may be having PTSD next year since Amazon is sending its' workers back into the office and construction on I5 is set to begin early spring, iirc.
Oh, and I hope you're comfortable with PAWGing or PAAGing.