A Gate for demons, or for God?

The world attaches no value to our bodies and it often feels as if the Church shares the same vision: the body is evil, worthless, a sort of dark gate through which demons, passions and sins enter our being. But is this the revealed truth and is this really what the Church confesses? We need to escape this confusion, we need to rediscover the worth of our bodies before we start preparing our fight against the passions which control them. If we do not know the value of our bodies, how are we expected to fight for them?