How many people are willing to take problems as the shock they need to wake up? It is more likely for them to see such difficulties as bad luck or as an excuse to whine or blame the experience on being in the wrong place at the wrong time. The result is that the same experience or something like it enters their lives over and over.
Each person is an attracting machine. All experiences, both good and bad, are waiting for someone to choose them. So, calling earth the planet of lesson is not such a bad idea. We came here to take responsibility for what we choose. Life on this planet of lesson is like lifting weights. Being able to stand up under the weight of your bad experiences is the way you grow into the emotional strength you need to access better life experiences.
Your bad experiences are the signals that some thoughts or behaviors need to be changed. Bad experiences come from either your conditioning (your trained machine) or your inability to see them as a signal that you need to make a change of some kind. Either way you are faced with a choice. Choose to see what you need to do to effect change or keep whining.
I think that it is important to keep in mind that we live on the planet of lesson. The lessons are about recognizing how to use our pain to change so that we can attract better experiences in all areas of our lives, particularly in our choice of partners.