RisingSun613, having kids isn’t required by halacha for women. Do you think only men should have kids, since the women have no mitzvah, and they might chas v’shalom have daughters who wear long earrings?
Also, there are clip on earrings, so I think the only real solution would be to cut off everyone’s ears. 🙂
My wife does think that tznius applies to jewelry, and is careful with what she wears, and lets our daughter wear. I just don’t see piercing the ears as in any way shape or form being a compromise in tznius.