If you don't experience doubts, you're either in denial or not making a serious commitment.
Really? I couldn't disagree more strongly. Every situation is different and mine must have been the exception to your rule. We dated for almost three years before we got engaged and didn't get married until six months after the engagement. Most of that wait was scheduling, but not at any point during the engagement did I have any doubts. We were both older (me 29, she 27) and we had talked about everything and even knew that when it was time for kids, we would adopt. There have been some bumps, but nothing serious since year 2 and we just hit year 17. Had we rushed into marriage in the first year like she wanted to do, I have little doubt that I would be among the divorced. Instead, we waited, worked out our **** and got married and felt good about it.