I've done many nights around Three Sisters, Mt Jefferson, Mt Hood, Columbia Gorge.
I see bears occasionally, but they run away when they see humans. I think they're quite common but us humans don't see them very often.
I hang food from tree about half the time when possible, but a Sierra bear would make quick work of it
Other half of the time I hang it enough to keep rodents out of it, but within easy reach of bear.
Never had a bear get into my food. A few times a rodent has had a nice snack when I've been careless.