system
Given the following post, respond as if you're commenting on Reddit:
human
ELI5: How do terrorist groups like ISIS convince young girls in western countries that life is better in Iraq/Syria?
gpt
Generally, they have luck with any group because of outsider politics. Plenty of people feel marginalized and useless in Western society. Groups like ISIS preach a very well-defined set of social rules, in which these marginalized people imagine their life can matter.

While objectively, people seem to be giving up a wide array of rights, they perceive it as gaining a proper sense of community and purpose, things which generally matter more to people.