You are saying you don't want to use Origin characters that are pre-written and pre-integrated into the story - but you don't like NOT having a pre-written pre-integrated character? So, which is it?
That's still not it, Alexandrite. What people are saying is that, they don't like how other things are getting compromised (bland non-origin character, non-existent party banter, narration issues)
because the origin system exists and because the devs want to promote that system of theirs. Personally, I can live with "a blank slate character that has nothing that makes them more special than everyone else", but not having party banter is a big disappointment. I find the way your "party" feels and interacts within itself in DOS2 is disappointing. I won't complain about the fact that I don't care about the origin characters, but I will say that it is disappointing that this whole origin system compromises other things that I do care about.
What many of us want is something that makes you feel that your custom character matters, that the story exists because the character exists. In BG1 you were brought up in a peaceful and quiet place but suddenly that peace is disrupted because someone wants you dead, but you don't know why. And based on conversations with NPCs and the journal you get the feeling that something big and ominous is going on and you're somehow involved in it; you just don't know how. All that context makes you feel you're special - you, and not any of your companions. This in no way means you're a "pre-written" character, and prevents you from being able to act how you want, make up your own personality, and choose whatever dialog choices you want. In DAO you're special because you're a Grey Warden and it's made clear by the game that without you Alistair alone most likely wouldn't be able to do much. In DAII you're just a dude but the game also makes you feel you're special because of the circumstances in which the companions come to you, the impact you make to their lives, and how the game makes you rise into the hero. In DAI, well, no need to say much here cause in DAI you're the chosen of freaking Andraste who almost literally holds the fate of the world in their palm. There is a reason for you to care about the character you're playing.
In DOS2, my constant question for my non-origin character is, "What if I didn't exist?" As a non-origin character all you do is helping the origin characters beat up the bad guys along the way. You can be replaced by any hired mercenary and the story of the origin characters will unfold the same way. Only 4 of you survive the prologue but there are 7 of you including your non-origin character, so chances are the world would still be completely fine if your custom character didn't exist. There isn't a story about my own character.
