being denied a VBAC

Sam the T-zam

so I'm pregnant with my second baby and recently had a doctors appointment. I asked if since I had a c section not that long ago if I'd be a good candidate for a VBAC. well as it turns out, the hospital that I'm going to has a policy that prevents mothers from attempting a VABC. since I have a HMO I can't change hospitals so I'm pretty upset. I really wanted to try. is this kind of policy common? am I upset for no good reason?