Why not hold on to the proof sets, as they (coins minted in the different mints) could be valuable and redeemable in the future. If I purchased a Proof Set, I would hold on to the Proof Set and purchase a Coin Colectors Book in the Future. Slightly off the subject it is similar to acquiring Sheets of Stamps from the Post Office. There to I would also purchase a Stamp Collectors Book, stamps like coins can be worth a lot of money if they are rare and in good conditon. I know this is hording Coins (or stamps as the case may be) out of Circulation, but purchasing a proof set at the Mint or Stamps from the Post Office are not the usual way of acquiring Coin Money and Stamps. I consider both of them Collector Items.
