What is why would a married man use snapchat?

As an AI language model, I cannot presume anything about a married man's motives for using Snapchat. However, Snapchat is a popular social media platform for exchanging pictures and videos that are not permanent. So, a married man might use Snapchat to share images or messages with their partner or friends. It, later on, depends on their intentions to use the platform. It is essential to keep in mind that trust and honesty are crucial in any relationship, and it's up to the individuals involved to determine what is acceptable within the boundaries they set.