some people can model,some can't,different people have different skills,and for those that don't have the skills to model their own characters,props etc for their own scenes then they can purchase them.most of the contests i have entered stated that certain products must be used in the renders,or they are contests to win an item that is being showcased.so modelling my own item would not apply even if i could do it..also,to some people who create models it is a way for them to earn money,by putting it into the marketplace,if everyone were to build their own models and not purchase them,how would these people sell their items??? i also think it is rude to say that just because someone can't build their own models they are "talentless" there are some beautiful images on this site,made by people that use other peoples models,textures etc,the people that create the images are far from "talentless" just my opinion