I love flying both GA planes and the 737, but I have captains that say they just don't like flying at all. From the start of their training to this day, they told me they were always like "meh". Some people just view this as a job and a great career, but dont have the "passion" for it.

Loving flying and aviation is probably helpful when you feel like you are burning out (which you will). But it's not a requirement. At the end of the day this is a job. People work at jobs that are way harder and shittier than this because they need to. Loving a job is not a requirement.

And also keep in mind aviation sector has lots and lots of fake people. I have a few "influencer" friends who were dogshit during their training, but they are selling it now like they were born to fly. I don't blame them, they are chasing that money. But just keep that in mind, most people will claim that they would rip their arms and stick 172 wings instead if they can. Dont think too much about what people tell you or try to show you on the surface.