Alpacas are raised in the United States to be both pets, and investments. Many small farmers are also textile artists who use the alpaca wool to make beautiful clothing and tapestries. Alpacas are herd animals, so should not be raised alone. If you are interested in raising alpacas, you can find a lot of wonderful resources to read on Alpaca Meadows, a local Ohio alpaca farmer.
Alpaca Meadows has a booth at the local farmer's market in my area in Cleveland, Ohio, so I have experienced the alpaca yarns, both hand spun, and commercially spun yarns firsthand. The alpaca yarns are the softest yarns that I have ever seen, even the raw fiber is soft, and they make beautiful and very soft hands, socks, and gloves.
I have listed a few books to the right about alpacas and their care, along with a resource on working with more unusual wools including alpaca.