I'm a woman and I know we are jealous but it's healthy to be jealous.
A mother is always a mother and a wife is a wife, they are two different people. If a man is rigid in nature he might not know how to balance himself between them.

Before you choose the one you will give higher priority, I want you to remember there's all possibility that your mother will die before your wife, leaving you and your wife alone, think about it.

You women that are always jealous of your mother in-law, I don't know ooo, I recommend you get to know them, play your role as a daughter and don't try to take your mother in-law's place in your husband's life.
Thanks for the post boss