Im sure this has been said already but we paid for this game therefore giving us the right to complain.
Just like your restaurant gives out free stuff to entice people to go to your restaurant and not the competition's.
This game's job is to entice people to stay and not go to another MMO.
So complaining is capitalistically valid and -SHOULD- be done. I run a business. If one of my customers have a problem I want to know what it is so i:
1. keep that customer
2. prevent my competition from getting a customer
3. can fix the problem in order to avoid a repeat with another customer in the future.
If no one complained businesses doing poorly could not figure out how to fix their business and would go out of business fast.