so then why is fornication a sin?
if its not because of selfishness, then why?
again, im not trying to be disrespectful in the least, im just honestly asking.
Because it dehumanizes another human being. Have you ever read Pope John Paul II’s
Theology of the Body? It explains all of your issues very well. When two people lust after each other, or have sex outside of a marriage, they are turning each other into objects for pleasure. The human body is sacred, and should be treated as such; when one has sex within marriage, it serves to strengthen the love between the two married persons and to have them open to the miracle of life, the gift which God gave us which allows us to imitate Him in his creative aspect, by creating life. This is good, virtuous, and beautiful. NFP allows the couple to remain open to life and to build up love for each other.
Now, why is marriage necessary? Because it is not, as you say a license, rather it is a Sacrament. The purpose of marriage is to join two people into “one flesh” before God, to bind them permanently into a covenant with Him, with the objective of getting each other to heaven, through mutual support, love, guidance, etc. It is a vocation, a calling from God, which the couple responds to, not a simple legal agreement within the Church; this is false thinking.
Now, why is sex outside of marriage sinful? Because it is not about God, or creating life, or getting each other to heaven. It is not part of a vocation, it is fornication plain and simple. It is using the body of another for your own pleasure (which involves selfishness, but I’ll get more into that). Think of it this way: the person whom you have sex with is a child of God. Think of what that means. The Creator of the universe created this individual, and loves him or her dearly, and died for him or her on a cross so that he or she could be with Him in love and joy forever. They are sacred human beings, and we are called to treat them like Christ, for indeed they are the Body of Christ, and whatsoever you do unto them, you have done onto Him. Then you have sex with them for no real reason other than to get your jollies off.
You could get to know the beautiful person whom God created, but you didn’t; you could have joined with this person into an eternal covenant, and made vows to love him or her forever and to help this person on their life’s journey towards holiness, but you didn’t; you could have simply been good friends with this person. Instead, you use their body as a breathing sex toy and move on. Because you deemed your pleasure more important than he or she as a person. You deemed your pleasure to be an end so great that you couldn’t wait, and show him or her a little respect, by promising to join with him or her in vows, recognized by God and His Holy Church. Instead you use them like a tissue in order to relieve your pressures, and walk off.
That person is worth more than that, and if that is the only way you can see this person, you should walk away; they deserve better treatment. We are worth more than “sex for pleasure.” God offers us the best: sex in marriage, a sacred and holy act which can create life, a thing like beautiful gems and precious stones; instead of taking that, we go for hurried nights which end in shameful slinking off into darkness, the vague feeling of being used, a thing like dog poop and cheap costume jewelry.
Sex outside of marriage is sinful because it’s bad for us, and it is just that simple. It dehumanizes other human beings, and is desensitizes us to the true beauty and meaning sex can have, in marriage. That being said, sex can still be sinful in marriage. If one uses contraceptives or aboritifacients, or even if the sex is lustful, while open to life. I would suggest reading this:
fallibleblogma.com/index.php/lusting-for-your-wife/
for more clarity on that topic, as well as
Theology of the Body by Pope John Paul II.
On another topic, I can say firmly that Buddhism is not at all compatible with Christianity. The “third way” you propose seems an awful lot like being lukewarm. God calls us to do more than take the middle road; He specifically calls us to take the highest road possible. lukewarm and half-attempted shots at holiness just will not cut it. Your proposal lacks sincerity and moral honesty. What on earth do you want with sex outside of marriage? I’ve seen friends who did that; it is not good. If you are a guy, you have no idea how capable you are of hurting a girl and killing your conscience. If you are a girl, you have no idea how capable you are of being hurt, and hiding your conscience away for false feelings of “love” which are insincere and pleasure driven.
I will pray for you, that you might find the path to truth, and think reasonably. Do you honestly believe that you have somehow superseded 2,000 years of knowledge contained in the Catholic Church, which was amassed by the greatest of minds and men who knew Jesus personally? I certainly don’t think I could do such a thing, and I consider myself very intelligent. Humility is important when considering such things, and it is good if we, the young (I am 15, turning 16 this October) recognize this before making statements like “the Church must be wrong on ____.”