I think it is kind of magical to witness the process. I only experimented a few times, and never aged it, so every was very sharp. The best was a sharp brandy made from a bottle of wine I bought. The worst was using a leftover keg of beer, which bittered the copper pipe, so everything after tasted like gin.
I would recommend people try it. You can make one out of copper pipe from a hardware store, a few fittings and a pressure cooker. Be safe, of course, and remember that ethanol is used as a preventative for methanol poisoning :)