In my spiritual practice over the past 10+ years, I didn't really dive deep into the Christianity or Catholic side, however, through my seeking & searching journey, I'm aware nearly half of human race has angelic origins. Celestial angels don't have human experiences, they can only observe closely from other angels who actually experience human lives. I believe that's one of the reasons why the angels are helping their fellow human-angels when they get lost and need assistance...
It was said the volunteered angels cut their wing(s) in order to have physical human forms, which is different from the "fallen angels" who sinned and as such. (Apparently there are also other different interpretations about angelic humans or Earth angels, etc., here is to briefly describing what resonates with me.) From time to time we can find some angelic qualities from people surrounding us and often they feel don't belong to this world and want to go back