Is is possible that you feel crappy and are blaming your work environment?
I've been sitting in front of a computer for 30 years and my neck never hurts. In fact, nothing does.
No matter what you decide, you must take care of yourself. If you don't feel well, you won't be happy doing anything. There are many references on the web on what to do, some excellent and some horrible. I'd be happy to share what I do to feel great if anyone is interested.