I commute from Capitol Hill to downtown Bellevue M-F for an 8-4:30 position, and don't have too many gripes. I took 520 for a while, but have since switched to 90 despite the longer distance - just tends to flow better, and the whole thing doesn't come to a halt if a car happens to stall on it like 520 does. 90 east bottlenecks before the first tunnel, but tends to speed back up once onto the bridge. It takes maybe 25 minutes on any given morning, I'd allow a bit more time to cross the west Seattle bridge but shouldn't be terrible.
The drive home always take a bit longer, and 90 west backs up pretty bad connecting with both 405 and 5 south. Or, at least it appears to as I cruise by each afternoon towards comparatively open 5 north.

Still get home in 45ish minutes each day. Definitely bearable.