They often have low self-esteem. They want to be the centre of attention to boost their egos. They light a fire so they can report it and be the first person there, being the hero. Bushfires were often started by vandals who were frustrated people trying to have an impact on their surroundings. Things they commonly target are education facilities, abandoned buildings and, of course, what we are seeing right now - bushfires.
Pyromaniacs are people compelled to light fires.
These people do know they are doing something wrong, but they can't stop themselves. It's an irresistible impulse. It's a psychological disorder. Generally, when these people are growing up they develop some sort of attraction to and affiliation with fire. Mr Kocsis is considered one of Australia's top forensic psychologists.