Few genres in electronic music inspire the extreme response that trance elicits. Either you love it or you hate it with a passion.
Trance is a very emotional kind of music.
It makes people become more open and care for each other. Lots of people can't handle this or are just not that sensitive, especially people who think their ego is more important than other people. In spite of its hedonistic reputation, trance isn't seen by Tiesto as particularly drug-oriented. He thinks the media have blown that out of proportion. To him, it's all about feelings.