I have been using Playstation since it came out in 1994. I owned the original Playstation, a PS2, several PS3's, and now a PS4. One glaring problem that Sony is well aware of, and that thousands of loyal fans have been complaining about for years, is the inability to change ones PSN USER NAME. The desire to changes ones name could be numerous.
Allow us to change our usernames.. Microsoft allows us too you can too.