If you want creative expression and artistic dialogue with your co-conspirator, the photographer, and the viewer, and inspiring the photographer's imagination turns you on, you will welcome the opportunity to realise ideas on a purely artistic, non-commercial basis.
A model should not just perform a range of memorised poses like a mechanical toy, double as a coat hanger or wait for the photographer to give precise instructions as to the exact position of every body part, but take part in the creative process by conveying a mood or an atmosphere, and by contributing her or his own ideas.
In an ideal photographer - model relationship, one inspires the other.
If you believe that modelling is simply standing around and having your photograph taken, you have misunderstood everything.
As a photographer, I believe that working for time is a unique opportunity to experiment with my ideas. Equally, it is a unique opportunity for a model to realise her or his own creative ideas.