Why is everyone's new alien race humanoid?

Dear all:<br /><br />In reading through the Star Frontiersman, I noticed virtually all of the new alien races were humanoid. We have Cat people, Rat people, Bat people etc. One of things I liked about SF was that not every race was humanoid, Ul-Mor, Edestekai, Dralasite, Vrusk etc.<br /><br />I think we can do better than cats and rats, let's see what kind of non-humanoid races we can come up with. <br /><br />I have a number of ideas, but I think we need to start with a basic racial premise, as in silicon based life forms, aquatic, gas, etc.<br /><br />Thanks!<br /><br />mRgUnN