I’m going to apologize for being condescending from the get go.
Yea that seems like a good idea. Let me marry someone who annoys the heck outta me, who has horrid middos, so that I can improve my own. Sounds like a fantastic plan bound for many years of happy marriage.
If you marry someone with BETTER middos than yourself, you can still improve yours and have a harmonious marriage and a pleasant life.