Based on a lifetime of personal experience dealing with conservative Christians, and talking to many others who have had the same experiences, I don't think I'm generalizing when I say that very, very few conservative Christians are virgins when they get married, and I think relatively few of these people really regret their experiences when they were younger, whatever they may say to family or friends or their church. No doubt a certain percentage may be sincere, but I've become more and more convinced as I've gotten older that the number is quite small. And even if they do sincerely regret it, to support passing laws effectively punishing other people for doing the same in the privacy of their personal lives (abortion restrictions, contraceptive restrictions, abstinence-only sex ed, restricting discussion of LGBTQ people in schools, etc.) is still wrong, imo.