You could not have said it any better. I finished x-ray school when i was 20, moved up and around the field / department, got registered in multiple modalities, and i look back 12 years later and know i wouldnt have changed it. I wanted to be a nurse a few years ago to be a travel nurse only but i did not go through with it. Im grateful for that decision. A good friend was in nursing school when i was in xray school. We used to trade barbs at who would be happier...... we dont even bring it up now. She was "burnt out" about 3 years after she graduated. I couldnt be happier with my career. I took a few jabs once that "i must have not had what it took to be a nurse" but the longer i work, the more im grateful if that in fact was the case.
As far as the technology goes, MRI and CT scan are incredible now with the capability of the machines. Just goggle "3D CT Scan" and see the amazing images. It is not a monotonous "button pushing" job. You do have to think, you do have to know your anatomy, and you do have to be on your toes at times. As i mentioned in previous post, this seems to be a job you can do for the long term of your career. When you are 50 with kids in college, you will be glad your job isnt a huge stressor on you :)