Maybe not the total cause, but certainly an important aspect of the whole. The first was the deterioration of faith.
And, I don't know how old you are, but if you don't respect a gal enough to marry her, why don't you break off the relationship and let her find a husband, eh? 'Cuz chances are - even if she says she doesn't want to get married - she wants you to marry her.
But, I don't think you're mature enough yet to maintain a marriage. Takes work and compromise, laddie. You don't just "move on"!
You are making a lot of invalid assumptions here. I would encourage you to think about the stance, and not attack the messenger.
There are a lot of reasons that people do not get married. Some people may 'like' the person they are with, but do not 'love' them. To them, it's a safety issue. They would rather have a lukewarm relationship, rather than being all alone in the world. These people probably should not get married, as that would simply make all parties involved miserable. In these instances, eventually people do 'just move on'. Would you rather a couple raise a kid in a lukewarm relationship, have a single mom, or have a miserable marriage? These people are out there, they exist; and there are a lot of them.
My stance is that the laws on the books are very unfair to men. To this point, men have now taken the stance that they will refuse to marry; as the consequences are out-weighing the benefits. Yes, this is selfish; but this is life.
Please note; I have not stated, nor will state that this is my viewpoint. This is merely a very common viewpoint. This viewpoint has nothing to do with Gay Marriage, nor with my personal views.