I never had the opportunity. My parents divorced when I was 2. The whole thing freaked my mom so bad, she never really dated much after that, and never had a man stay over. My dad, on the other hand, has been with his S/O for the better part of 25 years. But they live far from me and we don't visit often, so nothing there either. I don't know how I'd react when I was younger, but it wouldn't bother me in the least to hear either of them going at it now. I'd be happy for them, to know that they are still enjoying life.