There's phases of behavior which are common through life. For example teenage rebellion, the wild twenties, mid life crisis etc. and they become cliché I suppose because they are so commonly observed.
I think the process of evolving yourself as an adult human-being in a healthy individual should be gradual and ongoing from birth to old age. Deciding you want to do more of something and making it happen. Deciding you want to get fit and starting to train. Deciding you are a bit bored or unfulfilled and taking on a new hobby or career. Bravo to those who "evolve" and grow as life goes by because they are the happiest and most fullfilled people around.
Other people are crap at knowing what they want, crap at analysing the parts of their lives which they are not happy with, talking about those, working on ways to improve them so they sort of "put up with it" until they think "I can't live like this anymore" and run off for a new life.
It's the ultimate in immaturity really because all you are doing is transporting yourself to a new situation believing it will change your life and eventually you will only find that the changes you need to make come from within. Some people are just too emotionally dim to get this.
They reach a certain age and think "I am unhappy, it must be the fault of my spouse. She doesn't do x y z anymore, but this new woman does...if I replace my old, boring wife for this young new model then I will be happy again."
Viewing life like that is quote sad. It's avoiding all responsibility for how YOU feel and avoiding any kind of growth in yourself.
I also think mid life crisis is often covert / undiagnosed depression in men.