Polygamy? Legalize? I guess, for some, it would be okay. Me? No way! Married, raised two daughters, I KNOW what these ladies are like. I lived with them - forever! God! Please! Don't! I can't handle another female in my life. I'll be good! I promise!
Incest? Yuk!!! Any way, shape, form, consenting or not!
Age difference? We don't live very long. A 30 year age gap between couples is quite a gap (Harold and Maude minus a decade or two). But, if we could live to be 1000. Now that would be different. 30 years would be like a fart in the wind. I could be 685 and my wife could be 430 - like robbing the cradle eh'?
Funny thread. I like it.