I've only played as a male character in KotOR 1 and that was just so I could do the dark side path, which I didn't want to do with a female character. I have no idea what the other romances are like but I wasn't too impressed with the Bastila romance. I really couldn't see what the appeal was either way. Bastila annoyed my female PC to no end so I thought maybe she'd be sweeter and cuddlier with the male PC but not so much.
For my part, though, I've truly enjoyed the BioWare female PC romances. I'd have to give them a slight edge over the Obsidian female PC romances, though I really enjoyed the Gann romance in NWN 2. I know a lot of guys complained about Carth in KotOR 1 but I found him enormously fun as a female character because I liked the semi-insulting style of flirting with him. Guess that shows you what kind of woman I am. At any rate, I like a little romance mixed into my game. It's not like I'm looking for a romance novel substitute in RPG form but--forgive me if I sound sexist here--I think relationships are important to women in general so if we have a romantic relationship and/or a friendship in a game it creates a more well-rounded experience for us.
Still, as I said, I could forgo the romance if there was a friendship. I liked how that was built into NWN 2. I liked that my PC had someone she could turn to if she needed tips on hairstyles, makeup... Yeah, right. No, the reason why I like the relationships is because it makes the PC's cause more personal. Sure, saving the galaxy or the world is certainly a noble goal but if my PC has relationships with her party members and is also working to save them, it makes the quest more personal.