This may be a generalisation, but from the ones I've met:
1. Conspiracy Theories are fun: History lessons would have been more interesting if Aliens were involved. It would be really interesting if there were mass conspiracies.
2. Conspiracy Theories make subjects easy: You don't have to understand anything about the boring difficult parts of a subject, you get to just make up what you want. It also gives easy to understand explanations for things, just like religion does.
3. You get to feel like you know more than experts in the subject, this leads onto:
4. I've found that conspiracy theorists tend to be quite insecure people.
1. Conspiracy Theories are fun: History lessons would have been more interesting if Aliens were involved. It would be really interesting if there were mass conspiracies.
2. Conspiracy Theories make subjects easy: You don't have to understand anything about the boring difficult parts of a subject, you get to just make up what you want. It also gives easy to understand explanations for things, just like religion does.
3. You get to feel like you know more than experts in the subject, this leads onto:
4. I've found that conspiracy theorists tend to be quite insecure people.