Dak, I had never owned a pet in my life. There is no denizen of BYC who is less an animal lover than me. (I wish animals no harm. I just aren't a pet person . . . ) These Emus turned up I can't say 'univited': hey, it's their turf. They're the ones who were born here. Okay . . . I turned up . . .
Two years later, I have three tame emus. No single day passes but they do something funny. They cost me very little (though my situation is unusual they largely eat, whatchamacallit, natural emu food. From the ground. In front of them.).
It seems that they become entirely tame if hand-reared from chicks, and compatible with other pets and livestock. I personally think and we have all discussed this issue at length at length that the pivotal issue is space. If you have lots of space, you can have emus.
In closing, I note that they are an amazing attraction. I live in the country in Oz, and emus abound (quite literally. They get shot in droves for abounding in farmer's crops); but still the majority of visitors to my faraway farmhouse including the adults are intrigued to hand-feed giant prehistoric flightless birds with names like 'Greedy' and 'Number One.'
Supreme Emu