I'll gladly pay full price if I really want a game when it's released. I don't begrudge the cost and I feel good giving money to the companies that make the games I enjoy.
However, I feel entirely justified in buying older games used.
After games have been available for a few months, they naturally drop slowly in price, but, with games that are maybe a few years old, it's very hard to find them new. In this case, it makes perfect sense to buy used games. Essentially, it's similar to swapping games with a friend - the used games are usually traded in as collateral by gamers anyway. They're just something someone else doesn't want anymore.
However, I feel entirely justified in buying older games used.
After games have been available for a few months, they naturally drop slowly in price, but, with games that are maybe a few years old, it's very hard to find them new. In this case, it makes perfect sense to buy used games. Essentially, it's similar to swapping games with a friend - the used games are usually traded in as collateral by gamers anyway. They're just something someone else doesn't want anymore.