The first ME sex scenes move way too fast and the end scene is ridiculous. Shepard put his/her clothes on and stepped out the bed like "Oh God what have I done?" They should really work on sex with ME a lot note to be erotic, sensual, and arousing, not wearing underwear cuddling and kissing. and Witcher is better with certain sex scenes that caught my eye and did a good job with them too makes DA romance looks like a joke in comparison.
Where did I defend the underwear? That's why ME1 is better than most. There's no out of place underwear. There's no awkwardly animated full frame screwing either.
DAI still does it best - better than ME1. The scenes provide characterization and exposition, and manage to be at least somewhat adult and mature without being gratuitous.
I'd rather ME's developers don't flat out go fishing for boners, personally. If that's why you're playing, I guess that's fine? Although if you find TW's content to be erotic, sensual, or arousing, I have questions.