Suffering for what?
The human being is freaking arrange though. Sometimes without an apparent reason, we just want or need to so something different and nonsense. Something without a deeper explanation, like running out of your house and starting to cry, like feeling like you've been hurt but only because you wanted to, or you want to feel like you're in a bad situation. Sometimes we just need to feel sad, to cry a little bit more and with a little bit less of sense. We need to feel bad in order to relax and see the things from other point of view, maybe to realize that things weren't that serious and you could have reacted in a smoother way. Sometimes we just want to feel bad because only that way you can miss the feeling of being well. Sometimes we suffer because that way we can see that we could suffer much more, and that way we don't take for granted our happiness and wellbeing.