I almost never do pre-orders anymore. There's no point. I'd rather see at least the first round of reviews before I buy it to see if it's worth plopping down $60 before launch day(which it often isn't).
I have to admit, I've been spoiled by steam, because I know that I can wait a year and get this same game for cheap, and I have plenty of time to kill between now and then because of my ever growing steam/gog backlog.
The last time I did pre-orders was with bioshock:infinite, and that was because I was really pumped for it, but also because steam was offering to throw in the new X-COM game with it(which I was planning on getting anyway). Either way, it was worth it.
Actually, for the most part I've stopped paying attention to upcoming games until the reviews come out. Even previews can be misleading, because there's no guarantee what's shown in the preview is actually going to show up in the full release. In some cases, it's little details, but in some cases, it's A:CM. Rarely there's the weird cases like BS:I where the released game and the previews were very, very different and I still enjoyed what I got.