I really only resell a game if I was absolutely disappointed in it. Combine that with the fact that, thanks to Steam sales and tight money situations, I am very selective about what I buy and likely wait until even console games are cheaper before I drop money on them. Renting in my area is limited to a single chain of rental stores on the wrong side of town, those horrible Redbox kiosks (and the shite game and movie selection contained within), or a mail order service (and I hated Netflix's DVD system, so I am not too keen on trying mail rental again). Reselling/trading-in also has the risks mentioned above several times. If a lot of people bought it in the first few days and decided to sell it back, chances are good the stores would quickly lower their trade-in values (if not turning down trade in offers after so many copies), since they are taking on excess stock of a game that is loosing demand quickly.
The Order: 1886 itself already looked like a game I wouldn't want to drop even $40 on, before watching the playthrough video. After watching some of it, I was completely convinced that game was not worth me buying. It might be technically and artistically polished (it did look good visually), but the design of it was very lacking (Wow, QTEs and walking between cover shooting sections. Other games did that better.), even taking into account the player probably had run through the game once before recording and knew where to go.
Games like Aliens: Colonial Marines, Sim City 2013, and even polished ones like The Order remind me to lay low and let reviewers and early adopters sacrifice their time (and possibly their sanity). You can't trust someone's opinion, but you can read several, including individual who likely aren't being payed to write theirs, and see how the general public thought on a game aligns with your tastes and what issues the launch window support has. We all have to think, "Do I want to bend over and preorder Shitfest 4 because it has the exclusive giant turd launcher gun preorder bonus (which will probably be on sale as day 1 DLC), or should I wait and see if I really even want to drop [insert your local price for new games here] on it and wait even longer if it doesn't sound very good."
There is also the case of game of the year editions that include much of all of the DLC a game got. Jumping the gun for a game (especially when the main draw for you is the single player) might come back to bite you when you could have waited a few months and got it for half the price of the original release and all the good DLC you wanted. Waiting is usually only detrimental for rare games like Atlus titles or some of Nintendo's low production number products (Pikmin 3, Xenoblade, the fucking Amiibo and the GC adapter).