How important is photography to you, and how limiting is your current camera?
I started in January last year with a Nikon D5000 and an 18-55mm lens. I dabbled a bit. Then I dabbled a bit more. Then I started looking for places to shoot. Then I started trying different types of shot. Before long, I was using my camera at least once a week, and I was starting to get frustrated with its limitations.
By Christmas, I had a D7000, 3 lenses, a tripod, remote, I'm looking to buy a flash gun, umbrella, diffuser etc etc!
If you can afford to upgrade and you feel like you should and you're going to get good use out of it, then go for it
