Marriage is not a romantic relation. This is a social responsibility. The so called celebrities are irresponsible and hence easy divorces. Being celebrities, they do not care about family and social reactions. They do what pleases them irrespective of morality, social norms and even law of the land.
That is why we should enjoy their role on screen only and not bother about their off screen activities. They are not and can not be our role models.
Actually we love heroes for the roles they are playing and in most of the stories, we see heroes always doing right things and villains always do wrong things. But the truth is that, every man in the world has Ram and Ravan inside him.
Actually, many villains onscreen are light-hearted persons in real life.
I even heard that the nice name 'Pran' was not given by parents to kids till now. That's only people's mind set. Nothing else