Features that make you love a game.

[Skyblade]

Games in which "no" means "no." Like in Suikoden. Specifically Suikoden IV where you can choose not to leave the island you're stranded on and you get stuck in an infinite loop of doing absolutely nothing until you load your last save. Though I would have preferred a bit more of something to happen on that island. I also loved that when you chose to execute someone, it wasn't just a test of character but actually happened.

Golden Sun

"Will you take this quest to save the world?"
"No."

...And the world drifts to its inevitable demise. -GAME OVER-

Awesome.

[Wolf Kanno]

Metal Saga has the best example of that, because it happens five minutes into the game.

MC MOther: Do you really want to go out into the world and become a tank operator? You could just stay here and live a quiet life.
MC: I'm going!
Maybe You're right... <-
You live out the rest of your days in uneventful bliss...

[Masamunemaster]

I have unfortunately not played dark arisen, dd was my ex roommates. I'm on 360 if you want to use mine.

[Mercen-X]

Metal Saga has the best example of that, because it happens five minutes into the game.

MC MOther: Do you really want to go out into the world and become a tank operator? You could just stay here and live a quiet life.
MC: I'm going!
Maybe You're right... <-
You live out the rest of your days in uneventful bliss...

I own Metal Saga and I do indeed find it awesome to be able to end the game the second it starts. I actually like a lot of games that have some kind of marriage scene (as long as it's not overly drawn out like in FFX).

On topic, being able to choose which character you're controlling (if you have a party).