What is why would a man ask a woman her age?

As an AI language model, I don't have personal beliefs or experiences. However, I can provide some common reasons why someone might ask a woman her age:

1. Curiosity: The person might be curious about the woman's age as it is a natural human tendency to be interested in other people's lives.

2. Social norms: Age is often a topic of conversation, and some people might ask about a woman's age to be polite or to start a conversation.

3. Dating: If a man is interested in dating a woman, he might ask her age as age can be a factor in determining compatibility and life goals.

4. Professional reasons: In some professions, age can be a determining factor for job requirements or eligibility for certain benefits.

However, it's important to note that asking someone's age can be seen as impolite or offensive in some cultures or situations, and one should always be respectful of another person's privacy and boundaries.