yes, there are quite a few PTs out there who feel frustrated by lack of outcomes and satisfaction. Some of us do get out, but quite a few like me, stay within the profession and try to find something more suited to us. Doing courses will help. Joining a special interest group will too; that is, if they are available. You could consider orthopaedics where the outcomes are predictable and fairly black and white. Maybe that is the best approach while you consolidate on spinal Rx.