Here's an interesting counter-opinion about the value of goats (or cows) that was posted on Interviewing a Goat Farmer.
I'm just not convinced of the value of goats. I live in a part of the country where goats are fairly common. I could take you to 20 places near me where they have 2, 3, half a dozen goats. In every case they (the goats) live in squalor. They aren't milked or treated like pets or used for any purpose. They simply are caged inside small fenced pens lie around in the mud and occasionally the owner tosses some hay at them. I could also take you to goat frams where the goats are well taken care of and milked but these are of course "businesses" not a few goats on a homestead. Why goats? yes I am aware that they give milk but so does every store in the world. I may go camping for three days tomorrow, I may on a whim go to Ireland for a week, I travel in a motorhome for weeks at a time. Sometimes I just stay home and relax. With goats (or cow, pigs and dogs for that matter) I couldn't do any of that. And it's more then not wanting to be tied down by animals it comes down to for what? What can the goats offer me? I can live the rest of my life without ever consuming goat milk or cheese. I certainly have no desire to eat goat meat. I think goat owners (casual goat owners) have a need to own animals much like the cat women you read about with 40 cats living in a small singlewide trailer. To what end??