I think you're possibly generalising your own experience to the masses. That's absolutely not the case for me.
I love learning to learn. I learned programming because I found a quick basic compiler / IDE on my dad's computer, along with some shipped examples, and it was actually magic to me.
I read our encyclopedias as a kid because it was just really cool. Likewise, I did physics in university not for a job (the jobs are shit), but because it gives me that feeling of expansive possibility and wonder that Carl Sagan gave me when I watched Cosmos growing up.
Most of my most passionate self learnings came about because of that feeling of magic, not because I was chasing an end goal.