Is it better to date a married man ?

Hi friends, my friend has been telling me about this married man in her office who wants to date her.

Though he is quite charming, her senior and excellent to be around as she says, but he is married. He has told her about his marital status but says he doesnt mind dating her.

She too thinks its a good idea, when I confronted her and told her that its going to be disaster, she said its always better to date a married man as it has a lot of advantages, is it really the case guys ?

Are married men safer option, isn't it wrong, what could be the advantages ?