I REALLY hate getting yelled at for no good reason

What exactly is the relationship between parents and children? It seems I and most of the rest of the world have different views on this. First of all, it's a relationship between people: meaning friendship, hate or any other human emotion is possible between them. Love cannot be bought, nor can it be earned by hours spent, love between parent and child is not automatic. Secondly, it's a relationship of teacher and student: parents are just about the only rolemodel for children in their most vulnerable state of their lives, and are there throughout much of the child's life. Most parents like this fact. Thirdly, it's a relationship of Sponsorship. You have this kid, and you like him, so you give him what he needs to do well. Or, you don't like him, and the government takes him on instead. It's not a partnership, as the kid never had any say in this from the start, and it's not a relationship of complete deference by the kid: as again the kid never had any choice and that's just unfair. All money spent by parents on their children is 100% their choice.

That is the extent of the relationship between parents and children. If both parties are unsatisfied with this and wish to negotiate a FURTHER agreement such as the child letting the parent live their life in exchange for more sponsorship, this is acceptable. It is not acceptable for the parent to provide extra sponsorship and THEN complain that the child isn't living their life the way the parent wants. EVERYONE'S life is ONLY THEIRS to live. Why is it that for something treated as common sense by most people, there are so many exceptions perceived around it?

EDIT: I tried adding "reactions" to my blog, but it didn't really work. The bottom option that's half cut off says "misguided".