Immoral is sleeping with her without being married to her. See, this is the difference between morality verses criminality. There are more people out there concerned with what they can legally get by with than with what they should be doing in the first place and it's because of permissiveness. Morally, I have a right to stand between you and my daughter. Therefore we have to look at the basis for saying that things between consenting adults are legal. Responsibility has to play a role. If you swindle her, then the consent is based on false trust. If you impregnate her, there should be legal recoarse because in absence of it, we have free spirits running around creating kids that the rest of the world must foot the bill for. Ouch. Steppin on toes, huh. Your presumed rights end where mine begin. I'm not paying for your kids.
This is a moral gray area, open to interpretation, unlike, say, murder. Reasonable people can disagree as to whether pre-marital sex is immoral or not.
Morally, I have a right to stand between you and my daughter.
Perhaps, but as consenting adults we have a moral right to exercise autonomy over our bodies. In fact, your interference with our autonomy (an autonomy that does not infringe on the moral rights of any third parties) would itself be an immoral act. Plus, you certainly wouldn't have a moral right to use force or threats to stop us in this situation.
If you impregnate her, there should be legal recoarse because in absence of it, we have free spirits running around creating kids that the rest of the world must foot the bill for.
And there is- sbe would be able to sue me for paternity. Though no system can force me to be a responsible father in that situation, it can at least force me to meet the bare minimum of responsibility by requiring me to pay my share. Otherwise, my immoral act (abandoning my child) would impose costs on third parties.