Polygamy good or bad

Polygamy if you wonder what it is it means you get to have more than 1 wife and believe it or not some cultures celebrated this and took great pride in this and would think of this as success a examples in the book "things fall apart" in this book men are aloud and kind of have too do this because in that religion having alot of wives and kids means success because you have a big branch of family and have someone to take after you but other people including me think this religious is somewhat bad because look at it this way if you did this now 2016 in the US you would be considered scum and could possibly go to jail because it is considered illegal in some states a example is Utah if you get busted with multiples wives u my get fined and get taken to jail.
This is a image of what a polygamy family would look like