Not only do I always read the manuals, I keep them next to me whenever I play because chances are I either forget the controls or need to look some up.
I got Madden 2007 a bit ago and while it's a great game the manual isn't that good. At least it plays a lot like 2005.
The Super Mario 64 manual was pretty weak. It had no clues on how to even get anywhere in the game! I can still remember playing with that game when I first got it and I couldn't even beat the first level. I went about a week without any stars. Then a friend told me I had to get one of those books if I wanted to beat it. So ten dollars and many pages later I was able to finally get one (and didn't get all 120 until nine years later).
I think the weak manuals may be a way to make money. Books have gotten awfully expensive (I usually pay eight or nine bucks for a paperback these days, used to only be about four to five tops). Since someone like me couldn't beat Super Mario 64 at all without one, I had to get one. Now keep in mind this was 1997 dollars as well, I'm sure those stategy books are about 17 bucks nowadays (but I haven't bought one in a long time so I wouldn't know).
It's even worse with computers. When I got my Macintosh LC back in 1992, it came with a huge, 300 page manual with a tutorial and reference. Also had a great troubleshooting section. My iBook, eight years later, had a little 80 or so page manual. Thankfully I knew enough about how to work a Mac that I didn't need the big tutorial section.
Software, though is worse than video games for manuals. The old programs were great. I have this ancient drawing program copyrighted 1988 for my Mac (I've used it on the old and still use it on the new) called MacDraw II. It had two large manuals. So did MacWrite Pro, my word processor. When I bought my scanner I got Photoshop Elements and I got no manual whatsoever with that. Just a little piece of paper saying how to set the scanner up. Thankfully I found a really good book on Photoshop that I keep under my desk at all times. The Sims is just as bad. The first game, which I got right about when I got that iBook, had a pretty good manual with it. I later bought Hot Date as an expansion pack and it only had a little piece of paper in the CD case.
I'm almost afraid to buy a new car. My Volvo has a nice big thick manual that explains every single control. But it's a few years old. What next, just a diagram showing how to turn on the radio?