I get that fairy tales aren't always supposed to be all happiness all the time, but these fairy tales were the saddest you can imagine. I love Wilde and thought that he would bring his wit to life in this format.
He follows a different path, calling out the human condition of his time but hits it hard with a Christian overtone. I understand and can appreciate humility and self-sacrifice, but some of the tales were so painful to read. The Happy Prince was one. I get that he was making the point that individual suffering will never create change, but it does become repetitive over the course of many stories. Maybe if I re-read them later, I will feel differently.