Elias Grail wrote...
Why remain faithful?
Well, perhaps because it's the right thing to do when you love someone? If you're playing a role, you play the role. If you'd rather play the game and get everything you can out on Mass Effect 2, then don't stay faithful. Being faithful in the game is about character, not about game playing.
I agree funadamentally that your LI should be a roleplaying decision. (It's not like you get a stats bonus).
But there are equally good RP reasons to leave your ME1 LI. Maybe your Shepard's just a bit of a player. Maybe he feels like saving the galaxy while remaining completely chaste is a little much to ask. Or maybe Shepard develops a new emotional connection with one of the ME2 LIs, and feels like he should act on it before one or both of them die.
Was planning on staying faithful to Ashley, even after horizon. and I thought the email was very sweet and the little cabin picture was a nice touch. "Opened the door" to a romance with Miranda after her personal mission, but it wasn't until much later that Shepard let Ashley go. (And it made Miranda's 'sod off' to TIM at the end much more satisfying.)
I hope those that stay faithful get their payoff, and I hope those of us that left our ME1 romances get a little drama, and I hope that no one's LI option gets marginalized.