MidnightBlue said:
As far as we know Adam and Eve never had their marriage sanctified by church
or state; they were just living together in a garden.
Seriously, I guess your view is reasonable if you refuse to believe in evolution and accept the first few chapters of Genesis as factual history. But I don't share those beliefs, not even remotely.
If you believe in the evolution of man then you cannot believe in the Fall, the Atonement, or the Gospel. The is a gulf seperating the two ideas too great to be crossed by anyone or anything. The two are completely and totally incompatible. If you don't believe in the Gospel then the marriage talk need not include any references to the Bible. If you exclude Biblical references then your only recourse is to the sociological affects of sex before marriage, and I've shown a couple of times that it is not good.
Sex is not what defines people. Sex is not the essence of me, and when you define your whole self as a sexual being you fragment your relationships. You define others as sexual beings and your relationships are based on sex. Unfortunately, sex is an extrinsic value and will not last forever, or even maintain the same value. This means your relationships live and die with your sex lives. This creates severe instability.
The other all-too-common cop-out is to say that cohabitation before-hand lets you basically test drive your partner. This also means the success of your relationship comes down to whether or not your distinct sex lives have happened to put the two of you at the same place at the same time. You do not grow together, you just hope to run into each other in the same arena of sexual compatibility. This means everything, again, hinges on sex - only this time your exclusive experiences have to match.
Waiting until marriage to have sex means two things. One, each person has developed no sexual identity, and it can then be developed together. The couple discovers their sexuality together and only between the two of them. Two, their sexuality is exclusively theirs. It is not the result of others interfering or influencing. There's no risk of being incompatible, because you both start at zero. This is, absolutely bar none, the strongest sexual link that can be developed between two human beings. This kind of intimacy cannot ever be imitated or reproduced, and this kind of intimacy is the greatest indicator of a healthy marriage.
Someone out there will, of course, say their best friend, or brother, or somebody got married without ever having sex and they were completely incompatible. There's always at least one who uses that ridiculous excuse as evidence. All that example means is that the people either 1) were defined by sex, or 2) were selfish with sex. It simply cannot mean anything else. Two people completely devoted to the happiness of the other cannot fail, sexually, if they both wait.