I like it how atheists and non Muslims here are trying to force their opinion in to others' throats, saying that all the Iranians are atheists, non believers, Christians and etc. It has nothing to do with supporting IR or not.Historically, Iran has been a religious society, even 1000 years before Islam and that hasn't changed much after 2500 years.
Yes, a huge faction of our society is secular, but a secular person is NOT necessarily an atheist, I don't think it's too hard to differentiate between them.
Like it or not, religion still plays a very important role in our society. Not all people are very devoted Muslims indeed, but the absolute majority of the society will tell you that God (Allah, Lord, YHWH, Ahura Mazada or whatever you call it) and religion play a significant role in their life. We do also have many atheists, but they are still the absolute minority. Only because you or your family are atheists, it doesn't mean that other 77 million Iranians are atheists too.
PS: Do not insult any religion, it's against forum rules and you might get infractions for repeated violations.
You can criticize people or ideas with respect, but degrading and insulting any religion will not be accepted.