It involves more than just writing. When I first began this type of work, I felt good. No respect from customers who received manuals and online help that weren't as good as we wanted it to be, and too little respect from many within our own companies. Most writers really want to provide you with better documentation than you get. But they aren't given the time, budget, support or cooperation to do a good job.
Companies cut costs whenever they can, and documentation is a prime candidate for the financial ax.
We want to provide you with quality documentation, but unless and until you demand it, companies aren't going to pay for it. If the documentation isn't good enough, call, write or email the company and not only complain, but demand that they provide better documentation. If, on the other hand, the documentation is good, then call, write or email the company and let them know that you appreciate it. A company that has good docs today is one budget cut away from garbage. Without customer demand, even the good ones can lose ground.