If there's one thing you learn at SHIELD, it's to roll with the weird and fight back with whatever you've got - even office supplies. Just ask SHIELD Agents Sitwell, Blake, Coulson, Romanoff and Barton.
So true. Sometimes, I think we as a fandom take it a little too far. Or maybe it's because we all want our characters to be redeemed and be good so much that we overlook what the writers are trying to tell us: not everyone can be redeemed. It's the way the characters are written and as an audience, I think there comes a point when we need to accept it.