I'm really interested in why it's important to you or why it's not important to you. Every second month, my wife and I attend our local lesbian meet-up. During the off months, ten of us have a breakout of our own as our interests and lifestyles are more limited (we're all married or partnered, middle-aged, empty nesters, our children are adults, we're all smokers, etc.). Sometimes we meet in a street café, sometimes in one of our houses. After warm hugs and hellos, we spend the next hour, sometimes two or three, swapping stories over coffee and cigarettes. We cover all the funny, serious, touching, frustrating, problematic or sad experiences we've had in the last month. We also enjoy discussing the challenges that our society confronts us with as lesbians, and how we cope with those challenges.
We have lesbian friends, but we probably have more straight friends. It is important to us to be friends with lesbians, but being lesbian is not a requirement for our friendship.