You know, it just occurred to me that the three angels that have decided that protecting humans is a good thing- their mission- are the three angels that seem the most confused about humans.
I mean, Anna wanted to be human. Balthazar thought we did decadence pretty good. Gabriel used humans as witness protection. They were chill with humans but they weren’t exactly our champions.
But then you’ve got the three amigos of confusion: Castiel, Gadreel, and Hannah. They all started off like, “Human are weird little creatures and I don’t get them.” but have each come to conclude that their real mission is protecting the awkward little two legged mortal creatures.
It’s funny that the more alien they are or the more confused by humans they are the more likely an angel seems to be motivated to think protecting humans is their mission.