If you want to dork with Facebook and see pictures of your neighbor's cat, that's fine, but in my opinion, it's not worth the risk (if any), and it's useless to want/expect meaningful security. I don't even know if seeing pictures of cats is a problem in Iran. :-)

If you want to communicate with other people securely, then, in my opinion, then everyone in that communications group needs to consider learning information security and operational security, and then applying it. It's not simple, it's not easy, but if you want to be secure, you're going to have to plan to be serious.