For some people, one person can not fulfill the most important aspects of their needs , whatever those needs may be. Perhaps one person does not like the way another drives & would rather drive with another. But then that disturbing driver is a great child sitter, or a terrific "cook". One should not be expected to fulfill all of another's requirements in order to thrive. Thusly the concept of an open marriage is born lest we destroy a great relationship for won't of a necessity . Just don't bring home the "Chinese virus".

Can understand that, but I don't judge others for their lifestyle

I wouldn't be interested in any polyamorous relationship. I am worthy of someone's undivided attention.

Some people seem unable to be comfortable in monogamy, some are never going to be comfortable in polyamory. Just make sure you and your partner are in the same group.

Someone banged her before you did, someone will bang her after you, too, if thats what she wants.

I struggle to keep up with one woman. If you think you're keeping two happy you're fooling yourself. But why should I care if a partner is sharing with another bloke. She won't wear out and he can keep her busy while I go fishing.

You want to have the cake and eat it it too?