Yes, its old. Announced in 2007 and I got mine back in early 2009. Its still one hell of a camera and its seen much use by me as well as a little abuse. In some ways (Hand-held, high ISO, low light for example) its better than my D800.
Here are some recent examples that prove its still quite useful: These images were taken on the evening of July 18, 2016 around 9PM, so it wasn't exactly sunny ;)
Images originally were shot as RAW files. I have little interest in the amateurs credo of SOOC or anything along those lines. I'm a professional and I shoot RAW.
Oh, and regarding the watermarks- The only people who have ever said anything negative about them are amateurs who don't understand the necessity of a professional protecting their image rights. My clients understand that their images wont have a watermark.