I'm going to buy expensive things for myself every time my wife flies to visit her mother. I no longer care that she gets crazy mad.
Why would you do something you know makes her extremely angry  whenever she visits her mother?
Because I'm a jerk, if she can't take on a jerk husband she shouldn't have married me in the first place
She probably didn't want to admit to herself that you were a jerk. Do you think anyone would agree to live with someone like that? Not everyone is marriage material.
Nah, she's just overreacting and she should be careful what she wishes for.
How was she supposed to know that you were going to be a jerk? And how was she wishing for it? It sounds like you just want to blame her for your spending spree.