Every now and then someone like you, who just bought their first DSLR, will find the forum and start popping off (your words) about how they've tested two cameras, and are suddenly the authority on those two cameras, and begin soliciting how good or terrible the one or the other is. Or wait, the word was 'horrible'. And of course, you don't provide images to demonstrate this 'horrible' performance, nor do you cite your own inexperience, of being a new owner.I figured someone like you would pop off. If you actually read what I said. This is for my wife also. She does not want to hassle with a difficult camera. What is wrong with that. Why have a camera that is so up and down with exposing. And yes it is what it is. Im sure the D90 takes great shots with the right settings. The D5000 just did a better job. Sounds like somebody is a little defensive.
Maybe you and your wife should have started off with a good book on exposure or general DSLR usage? Then perhaps you might have some basic understanding of what you are doing, so when you do make comments about gear, they are a bit more informed. "It is what it is" really doesn't cut it when it comes to image taking, because every exposure is going to have something different going for it, and is heavily impacted by the user, intentional or not.
As soon as you understand this, then maybe you'll refrain from using inflammatory words like 'horrible' in your posts to describe gear. At least until you understand your gear, and yes, that takes much longer than a trip to Best Buy and 400 shots divided up between two cameras.