Because copper pipe is easier to get ahold of. As far as I know, the copper doesn't go through a chemical reaction.
------- Now, if we're done insulting each other, and the entire human race, can we get back to work?
5:41 am on Feb. 20, 2008 | Joined Jan. 2008 | 40 Days Active Join to learn more about MulenmarKentucky, United States | StraightMale | 328 Posts | 744 Points