steve...I don't know that God or the lack of God is the main cause. with technology advances, ladies now deservedly having careers at the highest levels...men and women just don't NEED each other like they did in history. ladies don't need a man to protect, shelter and provide for them. folks don't need 4-6 children to raise crops, run a household, etc. modern times have just evolved marriage to a not required experience anymore. the rub is that men and women still want to love, have companionship, a family, the vision of what their parents had or perhaps dd not have.
it will be sad if one day we get to a point where men and women come together for personal benefit/feel good, perhaps have some kids, but then just live separate lives in separate homes. we are a selfish people...heck look at us LBSs...we NEED, we DESERVE our MRs and WWs back! it's hard not to be hypocritical about ourselves when you think about it.
there just has to be value/satisfaction in the struggle that a marriage truly is to be successful. have we lost the ability to put in that level of time/effort/dedication/work, are we just too selfish to stick with it when it's just much easier to pull up any random flame from our past or a new interest on social media and start over and let what was once good...just burn? for many folks I guess it is