Once a bachelor reaches a certain age, many women start to view him with suspicion. Because he has no broken marriages or engagements in his past, he is seen by many women as unstable. He hasn't demonstrated he can go all the way.
"I don't know about this guy, he's never been married. He's never even been engaged!"
So one of your must-haves for a potential husband is that he not be able to keep a marriage together? Basically what you're saying is: How can I expect this guy to succeed when he doesn't have a proven track record of failure?
Mixed signals, ladies. Mixed signals. Or maybe I'm just a hata because I'm not on my fourth bad marriage.