What's with all the stage diving?

Stage diving can be an exhilarating activity at a show. As long as you're not killing or seriously injuring yourself, of course.
Over the past week, two people have died and one person was seriously injured after jumping from great heights near a concert stage. This is very sad news because music is supposed to give people joy, not misery.
Last Wednesday, a male fan at a Phish show jumped from the balcony at the Nikon at Jones Beach Theater in Wantagh, N.Y., sustaining serious injuries. The next night, an audience member at a Swell Season show in Saratoga, Calif. roof jumped onto the stage while the band was playing and was killed. Then, the next night, Friday, in Belgium at the Pukkelpop Festival, Charles Haddon, the 22-year-old singer of electro-pop trio Ou Est Le Swimming Pool, was killed after jumping from a telecommuication tower at the festival after his band's set had just ended.
Apparently, Haddon's jump was documented as a suicide. However, the other two incidents remain unexplained. Could drugs have been a factor in these leaps of faith?
Imagine being Swell Season. Just another day on the road until a person goes splat on your stage mid-song. Was their music really that bad, man?
If you're going to stage dive, then do it from the actual stage into a sea of hands. It's a lot more fun and less painful that way.