I don't have full use of my legs, but I don't demand that everyone else has theirs chopped off to level the playing field, so please at least find out what being 3D ready means and understand that it won't effect your ability to play the game without 3D in the slightest before making demands about it.
So many people that have vision problems are against 3d, I understand that in cinemas, it could mean you can't watch the same movie your friends / family are watching, but in gaming you can turn it off any time and it isn't a problem at all, but adds a lot for those that can watch 3d, let them enjoy it.
Besides, 3d adds more market lifetime for games. I'm currently playing lots of old games like devil may cry 4, fear 2, Assasins creed etc that I didn't have time to play when they came out but they work great in 3d and I recently bought them and enjoying them a lot in 3d, more revenue for developers. If you add 3d to your game, as 3d adoption grows, you will keep selling your games for those that want to try old games in a different way.
About 3d being just a gimmick that will go away, I doubt it, 3d movies have never been this popular and they have given new life to cinemas ( http://blog.boxofficespy.com/2010/03/3d-movies-spike-box-office-revenue-3d.html ), where 3d make up for 33% of this year box office ( http://www.cinemablend.com/new/3D-Films-Make-Up-33-Of-2010-s-Domestic-Box-Office-18045.html ), Avatar is now the highest grossing movie ever ( http://www.nydailynews.com/entertainment/movies/2010/01/26/2010-01-26_avatar_ends_titanics_reign_as_highest_grossing_movie_ever.html ) with 80% of the revenue in US coming for their 3d version, and there's even remakes of old movies like Titanic or Star Wars coming in 3d. Electronic arts, one of the world biggest publishers, says that all is content is going to be 3d ready from now on ( http://www.computerandvideogames.com/article.php?id=273384 ). Since they own Bioware, it means that Mass Effect 3 will be 3d ready, and it will probably hit retail side by side with TES: Skyrim by the end of next year, and thus for Skyrim not being 3d could be a disadvantage by then. Also, more than 50 games are going to be 3d ready for the ps3 next year ( http://www.geek.com/articles/games/ps3-to-get-over-50-3d-games-next-year-20101124/ ) , and the Nintendo 3ds,is going to be huge no doubt, and so on, it doesn't look to me like 3d is going away anytime soon, instead it looks like the 3d market is growing incredibly fast.