What are the advantages and disadvantages of polygyny?

Answer 1

Biologically, it is easier for a man to perform his duties as a husband despite having several wives. A woman, in a similar position, having several husbands, will not find it possible to perform her duties as a wife. A woman undergoes several psychological and behavioral changes due to different phases of the menstrual cycle.

A woman who has more than one husband will have several sexual partners at the same time and has a high chance of acquiring venereal or sexually transmitted diseases which can also be transmitted back to her husband even if all of them have no extra-marital sex. This is not the case in a man having more than one wife, and none of them having extra-marital sex.