People change, usually to benefit themselves. After some time off from the headaches, some will realize many things... They will learn to live without the headaches, some will learn to compromise with the headaches, and others will simply just ignore the fact that the headaches ever existed in their lives. Why mind yourself with little matters when you have more important things to think about? Because in an unusual yet splendid way, its worth all the trouble in the end. Why do you train a puppy and go through the trouble to tame it? Why try to perfect a recipe? Why spend time to learn new skills? Why bother trying to find a significant other? Why do you do anything for the hell of it?... Because we know that it all will be worthwhile in the end, so much effort put into it and you'll recieve so much back. An obedient dog who loves you, a good meal, impressive and useful skills, and someone who loves you and will be there for you.