It's a very old camera now, if you're into a type of photography where low light performance or autofocus makes a big difference then I'd look for something a bit more modern. Even if you're budget is buttons something a bit less ancient will still still be a noticeable step up.
If not then go for it it, as long as you're not paying over the odds it won't lose any value, just make sure you allow for the lens, since that's probably worth more then the camera.