Why is it that when you ask people how to do something, instead of just telling you how, they feel the need to go on about their personal opinions?

I'm not talking about things that are usually considered controversial or moral debates, I mean more along the lines of learning trades/skills for a career path or business project.

This question is directed at teachers, professors, tutors, craftsmen, artists, programmers, musicians, architects, engineers, etc, or anyone else that teaches how to do something as their job or takes on an apprentice.

This is also under the context that after teaching you, you are intending to start your own business, not be hired, so the reason is not about "the way the company prefers it done".

Is it really so hard to stifle the urge to pressure someone into doing what you prefer?

This is not counting the correct way vs the incorrect way to do something either by the way.

It is more about "what you should or shouldn't want to learn how to do, because I'm not a fan of that type of thing, so even though I know how it works, and could easily teach you, I'm instead just going to argue with you about why you shouldn't do that, because screw your own preferences, be like me instead"

I've come across this with pretty much every career teacher, be they paid or free, and its infuriating. Why so pushy?