Hmmm ... I know the kind of sex scene everyone is complaining about is the 1980s action movie Top Gun style hero-gets-the-girl-to-put-out-`cause-he's-so-frickin'-awesome scenes. And rightly so, in Top Gun it's pointless trash - Maverick and Goose singing 'You've Lost That Loving Feeling' or 'Great Balls of Fire' to the gal is far frickin' better from a film-making and writing POV. And I don't even think you see any tits!! Jesus, what a waste of time (and in real life she's a lesbian too, lol!!).
But almost the exact same scene happens in Terminator (the Kyle Reese/Sarah Connor scene), and that's a very tender, touching moment in an otherwise brutal and hopeless film, and the writers and directors have introduced it perfectly.
Couple it with the extended scenes that were cut from the original - where THAT VERY DAY Kyle had almost killed her himself because she pissed him off - and you get the sense that, holy shit, Kyle is a guy who's grown up truly knowing nothing but war and death, and all these feelings for Sarah are shit that he just can't understand. So she takes the lead - you could almost say this is the point where Sarah 'mans up' (lol) and takes charge of her destiny rather than it being dictated by everyone else (it's suprisingly deep; Sarah's always talking about how you 'make your own future' and shit like that, but it took Kyle and the Terminator for her to think like that. Before, her life was entirely out of her control. Even in the earlier scenes, it's constantly some other person saying 'come with me if you want to live!' or 'you'll be safe in the police station (lol)' or 'sorry I can't make it tonight' etc.
EDIT: I forgot to mention - I'm one of the apparently few people who think Terminator 2 is nowhere near the masterpiece of the original. T2 is fun, but I can't help but feel it's like a fanfic written by Edward Furlong.
'Wouldn't it be cool if I was the chosen one and I had a special magic friend who came back in time to be my daddy?' Are you fucking kidding me? That's called 'Puff the Magic Fucking Dragon'.