I just wonder how many NTs here actually want to do it, but just can't?
Well that's a bigger question... "would yeu do it if there were no restrictions, if yeu wouldn't feel guilty, if noone cared, if yeur SO didn't feel bad about it?"
Durr the answer is YES.
The only reason we DON'T is because we'd get in trouble, or because we were taught it was wrong. If yeu want to do it and hold yeurself back 'because it's wrong' , then if yeu weren't taught it was wrong, and it wasn't taboo, yeu would've done it normally.
The only advantage yeu have there at all is the ability to go against yeur instincts, and instead go with the training yeu were given. Seriously, by not commiting adultery, yeu have just justified yeurself as being as intelligent as... a dog. Because yeu went against basic instinct, and did something yeu were trained to do out of fear of being punished.
Is this a bad thing? Not really, but it doesn't really mean yeu have any 'true' moral high ground, as the moral wasn't held by every civilization either, see the example of rome previously. So going "zomg I don't do that because people say it's wrong" just means yeu're accepting a moral that was told to yeu, not validating it for yeurself whether it's really something yeu truly believe, or if yeu're just going along with it because yeu're scared of reprisal.
Yeu may truly believe it, in which case I'm quite glad that yeu're standing up for whot yeu believe in, even if it can be very difficult to do at times. I just don't like seeing people think they're morally superiour for showing off they're too scared to provide their own opinion and morals and just latch onto the herd mentality for fear of being kicked out of the herd.
Think carefully about yeur opinions and morals, don't just blindly follow everyone else "because it's the right thing to do". If yeu don't know WHY it's the right thing to do, then yeu aren't moral at all, yeu're just scared of getting caught.