I'm an amateur.
I am well aware there are pro photographers that have far inferior cameras and do much better photographs with them. For starters, I still havent gotten Lightroom, I just use the original Nikon software, which has its limits. Then again, my camera is so good, 90% of the time I could just use the out of camera JPEG, especially if I would bother more about setting the correct white balance beforehand. And of course Lightroom wont help with stuff like composition.
But photographing with a good camera is a lot more fun. I get better results than with a worse camera, automatically, and I'm more inclined to have the camera with me, and more inclinded to actually use it. Also, I can afford it.
So - worthy ? Maybe not. But life is short, and a hobby is for enjoying it.