[Sephiroth's own upbringing was questionable, but at least she received an education. She disapproves of someone being created and kept ignorant.]

If you were not taught, I will attempt to answer any questions you might have.

That is the biological purpose of sex, yes. The desire to have sex is a natural instinct. Socially, it serves other purposes, and as I said, it can also be performed without the intent or ability to have children.

It is comparable to the way eating and sleeping are necessary for survival, yet some people eat and sleep for pleasure when they do not need to.