I don't know if it's so universal. My opinion is rather that most jobs will make your passion become dull. I knew some airline pilots who loved flying, but did

I don't know if it's so universal. My opinion is rather that most jobs will make your passion become dull. I knew some airline pilots who loved flying, but didn't feel so much like it after decades. I got into aerospace engineering because I liked all aspects of it. A couple decades of end-to-end meetings and "TPS reports" later, I'm not as passionate anymore. Some time ago I was excited about solving a practical issue by coding some new tool myself, a year of exchanges with management and IT has made me look forward to move on. By all measures my company is pretty good in my industry, but the corporate life just has a way of sucking away passion.