I think the song, Earth Angel, by The Penguins sums up angel investment pretty well. Certainty from the perspective of owners looking for a cash injection. "Earth angel, earth angel. Will you be mine? My darling dear, love you all the time."
There's little reason not to love angel investors all the time, and we'll get into that, but first have you ever wondered why angel investors are called angel investors?
Well, since they frequently pour their own money into uncertain and untested business ventures, they're often seen as brave risk-takers. Angels, if you will. Especially so given a lot of businesses they invest in might not be able to secure funding from conventional sources like bank loans or formal venture capital.