We generally tend to gravitate to those that are socially compatible with us. As we choose to make friends with our play mates, we have found that those in the 40 plus group better fit our requirements. I'm not saying that someone younger may not, however most younger couples don't have the same life experiences that we have had and we need to share more than just sex. It's pretty awesome when you can get together with your swing friends and there doesn't have to be an expectation of swinging. We just enjoy each other's company. That's what works for us anyway.