If dogs had opposable thumbs they would help you with the yard work.
If cats had opposable thumbs they would steal your car.(just kidding)
Everyone has a bad relationship or maybe two. Hopefully they learned from the them. Not all cats and dogs get along-but some do. You gotta find some common ground-mutual respect. Sometimes when people start falling for each other, common sense goes out the window. Some call this love. In our "gotta have it now" society, people tend to ignore the signs, what they know to be true-this person may not be right for me.
It is my humble opinion that LONGER courtships would prevent a lot of bad marriages. They need to take their time getting to know someone. If after a year the guy is still opening the door for you, might be a keeper. If after a year she still appreciates the fact that you opened the door for her, might be a keeper. It does take effort to make all of it work. If it is a bad fit-don't commit!
Women tend to think they can change a guy. Some are trainable, sure. Men tend to get comfortable and ignore women's emotional needs. Lets face it, women are more emotional than men. Goes back to the effort thing. Cannot let things go stagnant. By the way, during football season you're on your own!!!