Question about USA pennies?

a guy told me yesterday that it would be a wise thing to hold onto all the USA pennies that were made before 1982. because they are made of 95% copper and that as high as copper prices are now,the pennies are worth more from the copper than they are face value. and he said that one day if copper goes up the pennies will be took out of circulation and be destoryed by the government for the copper in them,and if you hold onto them now while they are still in circualtion,then later when they go out they will become valuabe as much as like when they stopped making silver dimes and quarters back in 1965. is he telling the truth,would it be wise to store up on all the old pennies? i read a thing online that said 1.00 in pennies that are made before 1982,are worth 2.83 in just the copper out of them.