To a large extent, the onus is on the teacher to generate interest. Most teaching until uni is mostly forced upon students.

Yes, but as an university level educator I have to stress that the vast majority of students suck at understanding what they will need to know to be good at the juicy bits that interested them in the first place. Our task isn't just to teach them what they are interested in. Our task (among others) is to prepare them for a life after university in their profession(s) while giving them the practical skill of learning new subjects themselves. For example: Nearly nobody wants to do the math stuff, but nearly everybody will profit from knowing it after the fact (at least in the field I am in). Education is more than knowledge, but if we talk about knowledge it is the systematic accumulation of interlinked ideas and concepts that after a few years turn someone who had no idea into someone who can excell in their field. Nobody who likes to work on cars likes doing taxes, but nearly everybody who lives off working on cars will need to know how to do them. So the question will be, can a society afford to teach people only the fun bits?

I personally think I would fail my students on a personal level if I let them go through my education and have them ill-prepared for the world that faces them outside. I have worked as a freelancer in the field I am teaching for years so I know very well what I wish someone would have thought me. You can sell a lot of dry stuff by tying it to a practical application that makes them see the use more clearly. That works pretty well and student like it. Real education should feel like gaining a superpower. That means practical applications are crucial, you should basically build the theory around solving actual problems and not the other way around. Pure theorizing should also have its place for those who like it of course.

But I would advice a little bit of caution to hold too strong thoughts about teaching if you have never done so for at least some period yourself. It is much harder and exhausting to do in practise than most people think it is. Especially with big group sizes some things we wish were possible are not necessarily so.

I think the challenge that teachers have is that being “interested “ in something is a skill in itself. I never played a clarinet when I was a kid, maybe I would have like it, but never did that. If we assume that being interested is a function of household income/structure/ happiness than things get even worse.