Lotsa different topics...fun thread to read.
1. Sex: Almost nowhere in the animal kingdom is anyone manogimous (only one sexual partner). It isn't natural. Believing in love and sharing it with one special person is wonderful, but to expect that every married couple will change, grow, learn, etc. at the same rate and in the same direction is a bit preposterous. The litany of unhappy marriages is a testament to this. So while it probably is still something that should only be shared by those "in love" since it makes it more profound as something more than just bodily pleasure, marriage is in and of itself a somewhat flawed way of trying to impose manogimy (sic) upon some who might be better off without it. For some it may work...and good for them...but divorce or having more than one partner in a lifetime I see as being somewhat healthy if the situation calls for it. Please note, I don't endorse casual sex for simple bodily gratification...I feel it cheapens it. But the whole "One marriage, one person." method I think is at another flawed extreme (for some at least). Just my 2c.
2. Jesus as he's been changed: Yes, the Gnostic Gospels (notably Thomas) speak of a different Jesus, and many documents were destroyed and/or changed at some point. Think of how much a story changes if you tell it a year after it happened. The Gospels (the ones used in the Bible) were all written about 40 years after Jesus' death. Considering the wildly different (and provable) influences upon Christianity throughout history as well as how much the actual events have been altered somewhat, the overriding truths that the scriptures speak of might have remained true, but the exactities of the Bible and the "facts" upon which much of Christianity is based are suspect at best.
-DM