Are you sure you'd still feel that once you're actually there? What if many people might believe what you say, but then quickly change their minds as soon as they find out how difficult and uncomfortable it is to live on Mars?
I doubt that it would be, though. If someone not only claims that they want to toil and die on Mars, but actually gets a ticket to leave all their friends and family behind on Earth to do so... that's not the sort of thing that people do lightly.