Take care of your stuff and you don't have to worry about it being damaged. Hell I'm still rocking my copy of Final Fantasy 7 I got when I was 14. Also there has been many cases where people have lost there digital goods.
Hell the Wii is a perfect example seeing how people are about to lose everything they bought on it.
Also blu-ray's are coated it takes ALOT to even scratch one.
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Yep this so much, Hell even with Gamestop you can normally get half of your cost back in trade credit.