Are you telling me your period is a pleasant experience? I spent a lot of hours listening to a friend tell me about her period.
I can only speak from my own perspective, but a woman's period is highly individual.
I used to date a guy who actually said I was nicer during that time. I've always felt very blessed in that I don't think mine have ever been quite as bad as some women experience, but there are some times when the stomach pains are so severe, they wake me up at night.
However... It leaves me feeling weak and vulnerable, which in turn, heightens my awareness -- and often, empathy -- of those who are feeling weak and vulnerable as well.
Is it pleasant? No. But it's something God uses to remind me of how reliant I need to be on Him (especially when I'm praying for Him to either get rid of the pain or just help with gritting my teeth and getting through it.)
However -- once again, this varies greatly from woman to woman.
And we ladies appreciate a guy who is willing to listen to -- and empathize with our pain.
Kudos to you for taking the time to listen to your friend!