You do get to be Queen of Ferelden, though! 
Not that you get to see your character doing much queenin', but the title is acknowledged.
Who cares about queening? I want Cullen's babies!
Though, when I played Origins about 2 years ago, I was really charmed with Alistair. So charmed that when I accidentally got his approval into negative, I restarted the game and googled a guide how to romance him and become a queen - and I was happy I was playing a Cousland.
Though his constant whining about Duncan was a bit anti-romance-ish... (hey, dude, there's a hot red-head chick next to you, do you really want her to see you crying?)
And I must admit it was really difficult to not romance him in my second playthrough, as Amell, but I held on and remained faithful to Cullen!
I wanted Zevran in DA:2 but totally failed in romancing him. Ended up with Anders. I enjoyed it, and I feel alot for Anders because of the ending combined with my Hawke's romantic involvement with him. But I got over the appeal of both Fenfen/Anders pretty quickly just cause both were too angry/broody and bit problematic for me. I'm straight so I didn't consider Izzy/Merill, saw them as my sisters anyway.
Cullen hit the nail on the head. Mature, emotionally balanced dude, and hot af. The romance was very well executed in terms of capturing a friendship->romance progression and cutscene balance, and I liked that it was strong on a bunch of different things: funny, fluffy, romantic, sexy, angsty, heartfelt.
I completely agree with the DA2 part here. The romance options were just too crazy for me and I found much more run in not romancing anyone and instead going to bother certain knight-captain to the Gallows every time I got opportunity.
As for DA:I and Cullen, as I mentioned, I totally love him! I'm really pleased with his character development from the innocent confused boy in Origins, through mage-hating broken, but still reasonable guy in DA2 to the pure awesomness in DA:I.
I also loved the romantic scenes themselves. But there's one thing that makes me wonder: when you choose to continue romancing him, the scene starts on the table in the office, but you wake up in the bed. Did they move because the table was uncomfortable? Or because the office is too public place and they were disturbed again? Maybe the scout from the first scene had another important report.
It would be fun to see a scene from his point of view.
Harding: "Hey, man, what's wrong, why are you drinking yourself to death?"
Scout: "Commander is gonna kill me."
H: "Why? What did you do?"
S: "I... uh... I went to give him that report and I... ehm... disturbed him when he was with the Inquisitor."
H: "What's wrong with that?"
S: "Well, he was with the Inquisitor..."
H: "What?! You mean with her? Like in bed?"
S: "More like on the table..."