Bible-boy I think it is a far greater assumption to say that angels in human form look like Barbie or Ken underneath. They had the form of the human body. Well the human body has parts, so logically it only makes sense that those parts would be right where they are supposed to be.
It's stretching it to say that these angels can have human bodies but without the reproductive parts.
And while angels in and of themselves are sexless, when taking on a human form that human form is not sexless. We get nowhere in Scripture where it tells us that.
Scripture does have to interpret Scripture, but we can always compare incorrect Scriptures together and come up with just about any kind of doctrine we want to. That is evident everywhere in the world around us, else there wouldn't be an "other Christian denominations thread."
But as I said in another post if the Holy Spirit has not convinced you that these fallen angels could co-habitate with humans then that's between you and the Spirit. But I believe the Spirit has led me to this understanding and have not been convinced by the line of Seth viewpoint. In the bigger scheme of what's going on the line of Seth argument doesn't make a lot of sense, where as the angel-human argument makes the most sense in the big picture.
God's blessings to you in your study of His Word!!!