You have asked two question here. And I wanted to address them both.
Why is it that so many people have a lack of respect for marriage now-a-days?
Is it a lack of respect for marriage, or more of a desire for individualism. Unfortunately, I am divorce. It's something that I thought would never happen to me. But here I am. Now I can easily say that it was her fault, but marriage is something that is not an easy think to maintain. It requires work, honesty, communicating with one another, and the willingness to try to understand (and act upon) what your partners needs, wants, and desires are (to name a few). And unfortunately, in todays world, to many people fall into the trappings of ... "What am I going to get out of it!" When you start to think like that in a relationship, I believe that it is the start of the end for that relationship.
Shouldn't we, as individuals, value each other and those whom we choose to marry?
In a word ... YES! However, we do not live in such a simplistic world where a question like this can be answered with just a simple little word like, yes! Instead, there are many things in our lives, both at home, and at work, that constantly tug and pull at us that end up impacting our relationships. If we could just take the time to "smell the roses", things could have the chance to get better. But only when each of us realizes that marriage is not about me the individual, but is about the us as a couple and the us as a family!
That's my initial thoughts to your questions. What do you think?