Who is the Islamic Republic Good for?

I keep seeing religious Iranians with Hejab immigrating to America and Europe and working really hard to stay in these adopted countries. I don't get it. I thought the religious Iranians would want to live in Iran, since everyone is forced to wear hejab and forced to behave according to religion.

So if currant Iran is no good for secular Iranians, and if currant Iran is no good for religious Iranians, why keep the currant regime?