You'd also be missing people like myself. I played Graal as a trial for at least a year before finally upgrading (took a while to convince parents).
Plus, people won't trust giving their information when they aren't paying for something.
Most MMOs with a free trial month require credit card info to register, and auto-charge you if you haven't canceled by the end of the trial period. It's common practice...
__________________ *Don't let the door hit you on the way out.*