I’ve suffered tremendously and all it has done is killed my passion and curiosity for life. I don’t react better, I simply care about less so I can’t be hurt as much. The innocence before suffering is better than the “wisdom” which comes with pain, we just kid ourselves of the opposite as a way to cope, because innocence isn’t sustainable.
Not everyone has the same definition of happiness. I’ve had phases of life where I had no real relationships but did have freedom (financially and few responsibilities), and they were better. I’ve also had good relationships, but if life is difficult or doesn’t include enough pleasure, these aren’t enough to sustain my happiness.