After listening to several hours of David Icke's talks, I have to say that what he is saying is no weirder or more crazy than what is said by any of the world's religions. In fact, in many respects, it's quite similar. Especially the reptiles part. What he is talking about could very easily come from a Christian if the terminology was changed a bit, and "Satan" and "demons" were substituted for "reptilians" and "illuminati".

He is also not a cultist. He doesn't want or expect anyone to believe anything he says. He isn't trying to sever anyone's existing relationships or isolate anyone from their existing relationships. He's not trying to start a church with followers. He's just going around the world talking to people about what he believes.

He isn't telling anyone to do anything other than to act on what their consciences tell them and telling them that love is the most powerful force in the universe. Not only is he harmless to himself and others (including his own children), I would say that he is very much a force for good in the world, regardless of whether or not what he says is true.