I don't think you understand the premise here.Quote:
Beneficial has nothing to do with anything. As stated before. You cannot reason that something is good or evil in gods eyes based of it is beneficial or not.
As I said, if I eat fettuccine alfredo for dinner instead of grilled chicken and veggies, does God see it as evil?
First, the claim is made about evil, but this presupposes a working definition of evil. I'm parsing that into harmful, because I believe the poster is suggesting that anything that is harmful to our person (whole person, not merely physical) is evil. I don't know if that's the case, but I think it is a decent assumption.
Based on that, beneficial and evil share an identity relationship. So your sentence about good and evil in the eyes of God is saying that 1 doesn't equal 1. I'm sure I could write out a more detailed construction about this, because this presumes that God desires good or does not desire evil, and thefore that God desires benefit and not harm. But I don't think the presumption of God's goodness is out of line.
Your second question belies a misunderstanding of the point. The answer, of course, is it depends. If you eat to self-harm, that is evil. I don't believe that fettuccine alfredo is harmful, so on the face the answer is a qualified no. But there are all manner of ways to self-harm, and most people who have spent any amount of time thinking about morality recognize that not only the action but the intent is relevant here.
So, if you eat to self-harm, for taste, for enjoyment, because you want it, because you can't control yourself or because you don't want to control yourself -- whatever, that's bad no matter what the actual food is.
You're testing his premise -- some forms of sexual activity lead to self-harm -- without actually understanding his underlying assumption. That's why the point of consent is not relevant, and that's why your arguments aren't really addressing what he's talking about.
A better question to ask him is how can we recognize an activity as inherently harmful? For example, consuming strychnine is almost always harmful, it is inherently harmful. Drinking water is almost never harmful, it is almost inherently beneficial. Almost everything is situational.