Sex is not a sin, be it pre or post marital. If god forbid sexual activities, then he shouldnt give you sexual organs.

God gives you the freedom of choice. Its you who should decide what path you should walk onto. You can comment on the path others have took but who are we to judge them. No a single person on earth is flawless.

If love can lead to sex, it can be other way around too. Either way, you can say they co-exist and equally important. Its just like how some gals use their youth and beauty to get luxury life by loving a man much older than she is. Whether its sex, money, love, beauty, etc, these are the variable factor that govern our relationships. Its as simple as win, lose or draw.

God create men and not the other way around.

I think you should open up a little bit here. Marriage is just another excuse used to engage in sexual activities. What are the worth of these marriage paper that you and your wife sign? If the person heart not with you, no matter you bound them up with a marriage contract or rope also they will find a way to meet 3rd party and engage in various activity with him/her.

Ask yourself. What is sex? Just an another interaction of two organs. If this is sinful, then we should ban couple holding hands, hugging, kissing or any kind of skin contact between them because one thing leads to another and all these skin contact are basically illegal if you abide the rules. We should just resort back to the old method of matchmaking and marry/married whoever our parents choosen.

Like I said, some people choose to be controlled by lust and some choose to control their lust. The choice is yours to make. What choice other people make is not your concern. (ie. if you are willing to let the guy screw you, then prepared yourself mentally that you might get pregnant and he doesnt want to be responsible for it). You have to be responsible for whatever action you took and NOT TO BLAME OTHER ON DECEIVING YOU. There is no one else to BLAME BUT YOURSELF. Thats why I said IT'S ALL ABOUT YOURSELF. Think before you act.

Up to you... paper is still a paper at the end of the day and never can be used as a gauge to measure the responsilibity and seriousness to enter the further part of our life. Its just that people that play by the rules that feel the others are bad whereas rules is just another tool to manipulate/control people's behaviour.

Rules is just like a transparent window. It really depends on which side you view from.