I stopped being concerned with rank when I reached adulthood. In the end, it's about what you know. The knowledge and skill you develop through training can't be taken away from you and is what will serve you best. A piece of cloth wrapped around your waist does nothing more than keep your pants up and/or your gi closed. It's not going to develop a life of it's own and come to your rescue nor will it magically bestow upon you any great powers. ...so yeah, I would.