Also, it had the balls to be evil. You could kill a dog instead of doing an easy side quest to cure it and get it as a companion, you could break up a budding couple by banging one and telling the other about it, depending on your origin, you could sell your own people into slavery in exchange for a blood sacrifice to boost your own stats, you can defile the remains of dragon age Jesus Christ and tell the hot redhead nun to fuck off when she rightfully gets angry about it, before you kill her. You can sell a young boy's soul to a sex demon to learn blood magic.
This is just off the top of my head of all the evil shite you could do in Dragon Age: Origins. Say what you will about David Gaider's writing, the man had a hand in what I would argue to be some of the most captivating titles produced by Bioware in the last ~20 years or so.
And now you have his replacement for DA4 stating on Twitter that Dragon age was always about family (or something) and his intent to shove far left political ideology into the game.
Baldur's Gate is about family.
In the first game, you find out that your real father is the god of murder, and your brother is trying to have you killed in order to ascend to godhood himself.
In the second game, you find out that your adopted sister is your real sister, and because you are the offspring of an evil god an extremely powerful wizard is luring you into a trap by which he can steal your soul, and your sister's soul, and ascend to godhood himself. Oh, and in the expansion it turns out your mother wasn't a Virgin Mary analogue, but a high priestess of said evil god who willingly slept with said god to bear his children and intended to sacrifice you as a newborn.
Oh, and of the companions, a lot of their quests are about family as well, and their families have a theme of screwed up ness about them. From Viconia, a drow elf who wanted to escape the theocratic drow civilisation and who still feels guilty over her brother sacrificing himself so she could make a run for it to the surface (where her kind is the victim of actual, burn-you-at-the-stake-for-your-race-and-ethnicity racism), to Keldorn, a veteran knight who is at risk of losing his family because he's always out fighting evil, to Jan Jansen, master illusionist and turnip salesman, whose family is extended and weird, to Anomen, who is determined to make something of himself to please his perpetually disappointed father and come out from the shadow of his sister Moira, a successful and wealthy merchant...
That is family. That is how you write interesting characters. You give them difficult moral questions. What you don't do is have them come out with lines like "Have I mentioned I am trans today" or their equivalent.