To vote or not to vote?

As the the Iraninan president election gets closer, there is a big concern for Iranians to get involve in election or not, the group who doesn't want to get involve in election argue mostly that in the system of government of Iran the president has not enough power to perform the desired reforms towards democracy, in the past 8 years of presidency of Khatami most of the young generation who elected him with great expectation where disappointed, however the sweet smile of khatami changed a little the image of Iran in world as the International press described him as mullah with friendly face, but he didn't have enough power to make structural Changes toward democracy, there are stills many political prisoner's in Iran and still many writers and journalist and even webloggers are sent to the prison because of statement of their belief,economically in spite of Iran's big oil reservoir and fortune ,there are still many problems with inflation and unemployment.
But in spite of every thing and against all great odds in my point of view when we don't participate in fate of our country we will not be able to change anything, we should accept the changes would be graduate and needs its time, it is easy and fast to destroy but constructing and making progress is more difficult and slowly.
and as far as I am concerned it is important not to let the conservatives take the power again and win.
On the otherhand the situation did get better in compare to the past and the Iran today is not the same which I left in 1996 , at that time I was a young girl whose basic right and freedom was taken away, and I am not sure if I have had lived in today's Iran I would have immigrated to Europe!