I've been involved in Shidduchim for longer than I want to admit, as a Shadchan. I observe some boys and girls commiting within the first five dates, and others still looking for a Shidduch, five or more years later.
I dont think anyone feels that those who commited within the first five dates, were very lucky and found someone they clicked with quicker than those who keep on looking for years. My mother A"H always said, a Shidduch is Basherte, BUT you have to do your Hishtadlus and be openminded, or you can push away your Basherte.
I see boys in Shidduchim, who in their older thirties are still looking for certain type of families, even if the girl, by their own admission, is just what they are looking for, even if the family type isn't so different from their ideal. I've seen girls who in their 30's are looking for a with-it guy, while these girls look and dress like Seminary teachers. I've heard of good learning guys who speak of inappropriate topics on dates, so they'll get rejected, no matter how many times they get reminded not to. I've heard of girls spending the bulk of their dates talking about the Shiurim they go to and how they love their Rebbetzins. These are just examples of my theory below. I have many others.
I think some people are behaving aand thinking in a way that prevents them from getting married, because deep down they really don't want to get married. It's their subconscious tactic to stay single.



