Let me tell you a story.
A man bought a game called Lorderbands used for $10 on his Ybox1080. This person loved the game so much he bought the game of the year edition brand new for himself so that he may get all of the extra content too. He then gave his girlfriend the original used game. She too loved the game and bought the DLC so they could play together.
He then had friends who play PC games but didn't own a Ybox. He purchased a 4-pack on Nozzle's digital distribution system, Smoke, so that his friends could play.
Finally, he pre-ordered the sequel for his Ybox, and also got it on Smoke so that he could enjoy the new and wonderful game. He also bought two season's passes, one for his Ybox and one on Smoke.
In total, he spent $10 on a used game and ended up spending a couple of hundred on "new" content because of the initial purchase. This is the reason used games are good.
The End
As for other reasons:
1. I can't find a new copy when I want to get the game.
2. I don't think it's worth $60
3. It's a yearly sports title, that while enjoying the game really falls into part 2 again.
4. It curbs piracy.
5. I don't know what to expect from a game so I want to try it without too much investment.
6. I want to continue playing a story I'm invested in, but refuse to give the publisher a penny. (I don't care if I'm punishing the developer. They chose to be published there, I didn't.)
The basic fact is that this is the golden age of video gaming. The market is simply super-saturated with content. If you like more than one genre of games, you probably have a backlog. I could not possibly afford all the games I've played if I wanted to buy them new. Content creators are making it impossible to financially keep up with their pace. I gave up trying to buy a new Assassin's Creed for $60 when they started mailing them in as a yearly franchise and then withholding DNA sequences to be sold to me later.
Basic math lesson:
Let x represent the amount of disposable income I have set aside for video gaming. If there are 2 new games this year I want then I can only spend x/2 on each of them. More likely with my diverse tastes, I am interested in 50 games this year. Now I can only spend x/50 on each game on average. The used market helps fill this gap.
And finally, if the Xbone really cared about the customer (because this is where everything leads to), they shouldn't have restricted the reselling to specific retailers or a 1 time gift. They should have had two fucking brain cells and enabled a used game market that eliminated the middle man instead of being complicit with them.
It should have been like the Rock Band license transfer, only between accounts:
Person A is sick of the game. Person B wants the game. Person A sells person B the digital rights to the game at whatever he wants and there is a very small percentage that goes to the dev and publisher. And it wouldn't be a fee, just a cut. So if I sell it for 20 dollars, dev/pub get 2 dollars or something like that. A minimum of 1 dollar would be the cut to deter people from selling it for nothing. And you could do it right over Xbox Live with MS acting as Paypal. Fuck!
Sorry, I'm tired and was sick all week. But that is how MS should have handled it.