OP, I think you may need to understand this.
- You really do not need our permission to buy anything.
- People here just gave you their honest opinion. (which I believe is reason you create this thread, correct me if I am wrong)
- If buying a more expensive camera will make you happy, go for it. Life is short, we need to do what make us happy (of course, without making other people unhappy especially the lady in the house)

- I know someone who bought a Canon 7D without even know how to turn it on. She bought it because all the mom's in her son's school has a big camera. So she gotta have a bigger one. Maybe they will end up with a D3 or 1D soon. (Even bigger) She may not know how to use it, but she is happy. And that's all matter.
Therefore, just go buy the camera you like and be done with it.

I do not use Nikon, but if you ask me if D7000 is a better camera. By looking at the price tag, I can tell you the answer is yes. And I am quite sure about that. However, if it is better for you, that is the question that nobody can answer. Only you can answer.
If a Ferrari a better car than my cheap econo box? You may say yes, but when I drive to Homedepot parking lot, I know I have a better car.