copper vs pvc compressor lines?

wow... i've NEVER heard of anyone considering using pvc pipe for an air line!! although i'm a retired attorney, i work part-time at home depot in the plumbing dept essentially for "entertainment" - been there over 7 years. there is NO plastic pipe safe for high pressure air use. ALL plastic pipe is for water use ONLY - unless you're using grey pvc for electric wire runs. black iron pipe is your best choice overall for price. you could use copper or galvanize but both are much more expensive. please forgive me for what i'm about to say, however, .... ANY plastic pipe for air line use is DANGEROUS and is AN ACCIDENT WAITING TO HAPPEN and only AN IDIOT would consider using it for that purpose!!! lots of things on FABO are a matter of opinion with various options possible. however, THERE IS NO DEBATE ON THIS TOPIC - YOU CANNOT USE PLASTIC PIPE FOR AIR LINE APPLICATIONS ... PERIOD!!!