An argument can be made that, these days, manuals aren't really needed as much as back in the day, today games usually introduce you to the mechanics of a game through some form of a tutorial, which covers much of the ground that a manual would cover as well. As a whole, gamers today don't really care about manuals being included and I can't blame them. I know, personally, I only once ever really looked at a manual and that was for the original Pokemon Blue, for every other game I simply jumped in and figured it out on my own (which explains why until recently I had NO IDEA that there was a long jump on Super Mario 64). Ultimately, whether or not this is a good thing depends on when you grew up and your own gaming habits. I will say that, technically, with the loss of manuals it would make buying complete versions of games easier since there will be less items to track down than if you want to buy, say, Super Smash Bros. Wii U complete compared to Castlevania complete.